All Matches

Solution Library

Expert Answer

Textbooks

Search Textbook questions, tutors and Books

Oops, something went wrong!

Change your search query and then try again

Result Not Found

Books FREE
Tutors
Study Help
Hire a Tutor
AI Study Help New

Search
Sign In
Register

study help
business
applied statistics and probability for engineers

Questions and Answers of Applied Statistics And Probability For Engineers

A modification has been made to the process for producing a certain type of “time-zero” film (film that begins to develop as soon as a picture is taken). Because the modification involves extra
The article “A Study of Wood Stove Particulate Emissions”(J. Air Pollution Control Assn., 1979: 724–728) reports the following data on burn time (hours) for samples of oak and pine. Test at
Suppose that observations X1, X2, . . . , Xn are made on a process at times 1, 2, . . . , n. On the basis of this data, we wish to test H0: the Xis constitute an independent and identically
The accompanying 25 observations on fracture toughness of base plate of 18% nickel maraging steel were reported in the article “Fracture Testing of Weldments” (ASTM Special Publ. No. 381, 1965:
Use the large-sample version of the Wilcoxon test at significance level .05 on the data of Exercise 37 in Section 9.3 to decide whether the true mean difference between outdoor and indoor
Reconsider the situation described in Exercise 41 of Section 9.3, and use the Wilcoxon test to test the appropriate hypotheses.
A random sample of 15 automobile mechanics certified to work on a certain type of car was selected, and the time (in minutes) necessary for each one to diagnose a particular problem was determined,
The accompanying data is a subset of the data reported in the article “Synovial Fluid pH, Lactate, Oxygen and Carbon Dioxide Partial Pressure in Various Joint Diseases” (Arthritis and Rheumatism,
Use the Wilcoxon test to analyze the data given in Example 8.9.
Reconsider the situation described in Exercise 32 of Section 8.2, and use the Wilcoxon test with .05 to test the relevant hypotheses.
Suppose that in Exercise 32 each student had been categorized with respect to political views, marijuana usage, and religious preference, with the categories of this latter factor being Protestant,
Each individual in a random sample of high school and college students was cross-classified with respect to both political views and marijuana usage, resulting in the data displayed in the
A random sample of individuals who drive alone to work in a large metropolitan area was obtained, and each individual was categorized with respect to both size of car and commuting distance. Does the
The accompanying data on sex combinations of two recombinants resulting from six different male genotypes appears in the article “A New Method for Distinguishing Between Meiotic and Premeiotic
The article “Susceptibility of Mice to Audiogenic Seizure Is Increased by Handling Their Dams During Gestation”(Science, 1976: 427–428) reports on research into the effect of different
The article “Human Lateralization from Head to Foot:Sex-Related Factors” (Science, 1978: 1291–1292) reports for both a sample of right-handed men and a sample of right-handed women the number
The following data resulted from an experiment to study the effects of leaf removal on the ability of fruit of a certain type to mature (“Fruit Set, Herbivory, Fruit Reproduction, and the Fruiting
Consider the accompanying 2 3 table displaying the sample proportions that fell in the various combinations of categories (e.g., 13% of those in the sample were in the first category of both
The results of an experiment to assess the effect of crude oil on fish parasites are described in the article “Effects of Crude Oils on the Gastrointestinal Parasites of Two Species of Marine
Have you ever wondered whether soccer players suffer adverse effects from hitting “headers”? The authors of the article “No Evidence of Impaired Neurocognitive Performance in Collegiate Soccer
The NCAA basketball tournament begins with 64 teams that are apportioned into four regional tournaments, each involving 16 teams. The 16 teams in each region are then ranked (seeded) from 1 to 16.
Let p1 denote the proportion of successes in a particular population. The test statistic value in Chapter 8 for testing
The authors of the article “Predicting Professional Sports Game Outcomes from Intermediate Game Scores” (Chance, 1992: 18–22) used a chi-squared test to determine whether there was any merit to
Qualifications of male and female head and assistant college athletic coaches were compared in the article “Sex Bias and the Validity of Believed Differences Between Male and Female Interscholastic
In a sample of 91 college soccer players, the mean number of concussions was 1.07, and the standard deviation was 1.83(“No Evidence of Impaired Neurocognitive Performance in Collegiate Soccer
The accompanying data refers to leaf marks found on white clover samples selected from both long-grass areas and short-grass areas (“The Biology of the Leaf Mark Polymorphism in Trifolium repens
a. Show that another expression for the chi-squared statistic is 2 k i1n Npi 2i 0 n Why is it more efficient to compute 2 using this formula?b. When the null hypothesis is H0: p1 p2 pk
Criminologists have long debated whether there is a relationship between weather conditions and the incidence of violent crime. The author of the article “Is There a Season for Homicide?”
Sorghum is an important cereal crop whose quality and appearance could be affected by the presence of pigments in the pericarp (the walls of the plant ovary). The article“A Genetic and Biochemical
An information retrieval system has ten storage locations.Information has been stored with the expectation that the long-run proportion of requests for location i is given by pi (5.5 ⏐i
It is hypothesized that when homing pigeons are disoriented in a certain manner, they will exhibit no preference for any direction of flight after takeoff (so that the direction X should be uniformly
A statistics department at a large university maintains a tutoring service for students in its introductory service courses. The service has been staffed with the expectation that 40% of its clients
a. Having obtained a random sample from a population, you wish to use a chi-squared test to decide whether the population distribution is standard normal. If you base the test on six class intervals
A study of sterility in the fruit fly (“Hybrid Dysgenesis in Drosophila melanogaster: The Biology of Female and Male Sterility,” Genetics, 1979: 161–174) reports the following data on the
The article “Feeding Ecology of the Red-Eyed Vireo and Associated Foliage-Gleaning Birds” (Ecological Monographs, 1971: 129–152) presents the accompanying data on the variable X the number of
The following data set consists of 25 observations on fracture toughness of base plate of 18% nickel maraging steel(from “Fracture Testing of Weldments,” ASTM Special Publ.No. 381, 1965:
The article “Compatibility of Outer and Fusible Interlining Fabrics in Tailored Garments (Textile Res. J., 1997:137–142) gave the following observations on bending rigidity (N m) for
Each headlight on an automobile undergoing an annual vehicle inspection can be focused either too high (H), too low (L), or properly (N). Checking the two headlights simultaneously (and not
The article “A Probabilistic Analysis of Dissolved Oxygen–Biochemical Oxygen Demand Relationship in Streams”(J. Water Resources Control Fed., 1969: 73–90) reports data on the rate of
An article in Annals of Mathematical Statistics reports the following data on the number of borers in each of 120 groups of borers. Does the Poisson pmf provide a plausible model for the distribution
A certain type of flashlight is sold with the four batteries included. A random sample of 150 flashlights is obtained, and the number of defective batteries in each is determined, resulting in the
Say as much as you can about the P-value for an upper-tailed chi-squared test in each of the following situations:a. 2 7.5, df 2b. 2 13.0, df 6c. 2 18.0, df 9d. 2 21.3, k 5e. 2 5.0,
What conclusion would be appropriate for an upper-tailed chi-squared test in each of the following situations?a. .05, df 4, 2 12.25b. .01, df 3, 2 8.54c. .10, df 2, 2 4.36d.
Show that the chi-squared statistic for the test of independence can be written in the form 2 I i1J j1 n Why is this formula more efficient computationally than the defining formula for 2?
A sample of n 20 companies was selected, and the values of y stock price and k 15 predictor variables (such as quarterly dividend, previous year’s earnings, and debt ratio)were determined.
The article “A Statistical Analysis of the Notch Toughness of 9% Nickel Steels Obtained from Production Heats” (J. of Testing and Eval., 1987: 355–363) reports on the results of a multiple
A study was carried out to relate time to failure (y) of a certain machine component to the variables operating voltage(x1), motor speed (x2), and operating temperature (x3). The resulting data set
A multiple regression analysis was carried out to relate y tensile strength of a synthetic-fiber specimen to the variables x1 percent cotton and x2 drying time. The data set consisted of n 12
The article “Chemithermomechanical Pulp from Mixed High Density Hardwoods” (TAPPI, July 1988: 145–146)reports on a study in which the accompanying data was obtained to relate y specific
The effect of manganese (Mn) on wheat growth is examined in the article “Manganese Deficiency and Toxicity Effects on Growth, Development and Nutrient Composition in Wheat” (Agronomy J., 1984:
Conductivity is one important characteristic of glass. The article “Structure and Properties of Rapidly Quenched Li2O-Al2O-Nb2O5 Glasses” (J. Amer. Ceramic Soc., 1983:890–892) reports the
The accompanying data on x frequency (MHz) and y output power (W) for a certain laser configuration was read from a graph in the article “Frequency Dependence in RF Discharge Excited Waveguide
The article “An Experimental Study of Resistance Spot Welding in 1 mm Thick Sheet of Low Carbon Steel” (J. of Engr. Manufacture, 1996: 341–348) discussed a statistical analysis whose basic aim
An ammonia bath is the one most widely used for depositing Pd-Ni alloy coatings. The article “Modelling of Palladium and Nickel in an Ammonia Bath in a Rotary Device” (Plating and Surface
An aeronautical engineering student carried out an experiment to study how y lift/drag ratio related to the variables x1 position of a certain forward lifting surface relative to the main wing
Air pressure (psi) and temperature (°F) were measured for a compression process in a certain piston-cylinder device, resulting in the following data (from Introduction to Engineering
Feature recognition from surface models of complicated parts is becoming increasingly important in the development of efficient computer-aided design (CAD) systems.The article “A Computationally
The authors of the article “Long-Term Effects of Cathodic Protection on Prestressed Concrete Structures” (Corrosion, 1997: 891–908) presented a scatter plot of y steady-state permeation flux
Curing concrete is known to be vulnerable to shock vibrations, which may cause cracking or hidden damage to the material. As part of a study of vibration phenomena, the paper “Shock Vibration Test
Refer to the water-discharge data given in Exercise 55 and let y ln(q), x1 ln(a), and x2 ln(b). Consider fitting the model Y 0 1x1 2x2 !.a. The resulting hiis are .138, .302, .266, .604,
Multiple regression output from MINITAB for the PAH data of Exercise 53 in the previous section included the following information:Unusual Observations Obs x1 flth Fit SE Fit Residual St Resid 6
A study carried out to investigate the relationship between a response variable relating to pressure drops in a screen-plate bubble column and the predictors x1 superficial fluid velocity, x2
Reconsider the wood specific gravity data referred to in Exercise 56. The following R2 values resulted from regressing each predictor on the other four predictors (in the first regression, the
The accompanying MINITAB output resulted from applying both the backward elimination method and the forward selection method to the wood specific gravity data referred to in Exercise 56. For each
MINITAB’s Best Regression option was used on the wood specific gravity data referred to in Exercise 56, resulting in the accompanying output. Which model(s) would you recommend investigating in
The article “Creep and Fatigue Characteristics of Ferrocement Slabs” (J. Ferrocement, 1984: 309–322) reported data on y tensile strength (MPa), x1 slab thickness (cm), x2 load(kg), x3
In the accompanying table, we give the smallest SSE for each number of predictors k (k 1, 2, 3, 4) for a regression problem in which y cumulative heat of hardening in cement, x1 % tricalcium
In an experiment to study factors influencing wood specific gravity (“Anatomical Factors Influencing Wood Specific Gravity of Slash Pines and the Implications for the Development of a High-Quality
The article “Bank Full Discharge of Rivers” (Water Resources J., 1978: 1141–1154) reports data on discharge amount (q, in m3/sec), flow area (a, in m2), and slope of the water surface (b, in
The accompanying data resulted from a study of the relationship between brightness of finished paper (y) and the variables H2O2% by weight (x1), NaOH% by weight (x2), silicate % by weight (x3), and
Snowpacks contain a wide spectrum of pollutants that may represent environmental hazards. The article “Atmospheric PAH Deposition: Deposition Velocities and Washout Ratios”(J. of Environmental
Utilization of sucrose as a carbon source for the production of chemicals is uneconomical. Beet molasses is a readily available and low-priced substitute. The article “Optimization of the
The article “The Undrained Strength of Some Thawed Permafrost Soils” (Canadian Geotechnical J., 1979:420–427) contains the following data on undrained shear strength of sandy soil (y, in kPa),
a. When the model Y 0 1x1 2x2 3 x2 1 4 x2 25 x1x2 ! is fit to the hops data of Exercise 49, the estimate of 5 is ˆ5 .557 with estimated standard deviation sˆ5 .94. Test H0: 5 0
The article “The Influence of Temperature and Sunshine on the Alpha-Acid Contents of Hops (Agricultural Meteorology, 1974: 375–382) reports the following data on yield (y), mean temperature over
In the regression analyses, the three values of each variable were coded as 1, 0, and 1, respectively, giving the accompanying data (the value y8 19.3 was reported, but our value y8 20.3 results
An experiment to investigate the effects of a new technique for degumming of silk yarn was described in the article “Some Studies in Degumming of Silk with Organic Acids” (J. Society of Dyers and
Efficient design of certain types of municipal waste incinerators requires that information about energy content of the waste be available. The authors of the article “Modeling the Energy Content
A regression analysis carried out to relate y repair time for a water filtration system (hr) to x1 elapsed time since the previous service (months) and x2 type of repair (1 if electrical and 0
The article “Analysis of the Modeling Methodologies for Predicting the Strength of Air-Jet Spun Yarns” (Textile Res.J., 1997: 39–44) reported on a study carried out to relate yarn tenacity (y,
The authors of the article “An Ultracentrifuge Flour Absorption Method” (Cereal Chemistry, 1978: 96–101)studied the relationship between water absorption for wheat flour and various
An experiment carried out to study the effect of the mole contents of cobalt (x1) and the calcination temperature (x2)on the surface area of an iron–cobalt hydroxide catalyst (y)resulted in the
An investigation of a die casting process resulted in the accompanying data on x1 furnace temperature, x2 die close time, and y temperature difference on the die surface (“A
The ability of ecologists to identify regions of greatest species richness could have an impact on the preservation of genetic diversity, a major objective of the World Conservation Strategy. The
The article “Readability of Liquid Crystal Displays: A Response Surface” (Human Factors, 1983: 185–190) used a multiple regression model with four independent variables to study accuracy in
Let y sales at a fast-food outlet (1000s of $), x1 number of competing outlets within a 1-mile radius, x2 population within a 1-mile radius (1000s of people), and x3 be an indicator variable
Let y wear life of a bearing, x1 oil viscosity, and x2 load. Suppose that the multiple regression model relating life to viscosity and load is Y 125.0 7.75x1 .0950x2 .0090x1x2 !a. What is
A trucking company considered a multiple regression model for relating the dependent variable y total daily travel time for one of its drivers (hours) to the predictors x1 distance traveled
Cardiorespiratory fitness is widely recognized as a major component of overall physical well-being. Direct measurement of maximal oxygen uptake (VO2max) is the single best measure of such fitness,
The article “The Respiration in Air and in Water of the Limpets Patella caerulea and Patella lusitanica” (Comp.Biochemistry and Physiology, 1975: 407–411) proposed a simple power model for the
The following data resulted from an experiment to assess the potential of unburnt colliery spoil as a medium for plant growth. The variables are x acid extractable cations and y exchangeable
In many polynomial regression problems, rather than fitting a “centered” regression function using x x x, computational accuracy can be improved by using a function of the standardized
The following data is a subset of data obtained in an experiment to study the relationship between soil pH x and y A1.Concentration/EC (“Root Responses of Three Gramineae Species to Soil Acidity
The accompanying data was obtained from a study of a certain method for preparing pure alcohol from refinery streams (“Direct Hydration of Olefins,” Industrial and Eng.Chemistry, 1961:
The article “A Simulation-Based Evaluation of Three Cropping Systems on Cracking-Clay Soils in a Summer Rainfall Environment” (Agricultural Meteorology, 1976:211–229) proposes a quadratic model
High-alumina refractory castables have been extensively investigated in recent years because of their significant advantages over other refractory brick of the same class—lower production and
The viscosity (y) of an oil was measured by a cone and plate viscometer at six different cone speeds (x). It was assumed that a quadratic regression model was appropriate, and the estimated
The following data on y glucose concentration (g/L) and x fermentation time (days) for a particular blend of malt liquor was read from a scatter plot in the article “Improving Fermentation
In addition to a linear regression of true density on moisture content, the article cited in Exercise 6 considered a quadratic regression of bulk density versus moisture content.Data from a graph in
The following data resulted from a study commissioned by a large management consulting company to investigate the relationship between amount of job experience (months) for a junior consultant and

Showing 3500 - 3600 of 5107

First
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
Last

Services

Sitemap
Fun
Definitions
Become Tutor
Study Help Categories
Recent Questions
Expert Questions

Company Info

Security
Copyrights
Privacy Policy
Terms & Conditions
SolutionInn Fee
Scholarship

Get In Touch

About Us
Contact Us
Career
Jobs
FAQ
Campus Ambassador

Secure Payment

Download Our App

© 2024 SolutionInn. All Rights Reserved