A sample of 81 observations is taken from a normal population with a standard deviation of 5.

Question:

A sample of 81 observations is taken from a normal population with a standard deviation of 5. The sample mean is 40. Determine the 95% confidence interval for the population mean.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Statistical Techniques in Business and Economics

ISBN: 978-1259666360

17th edition

Authors: Douglas A. Lind, William G Marchal

See More Books

Question Posted: May 28, 2018 07:59 AM

See More Questions

A sample of 49 observations is taken from a normal population with a standard deviation of 10. The sample mean is 55. Determine the 99% confidence interval for the population mean.
A random sample of size n = 100 is taken from a population of size N = 2,500 with mean = 45 and variance 2 = 81. a. Is it necessary to apply the finite population correction factor? Explain....
In a multiple linear regression based on eight observations, the following sample regression is obtained: y = 22.81 + 0.85x 1 - 0.71x 2 with s e = 4.69. Also, when x 1 equals 50 and x 2 equals 20, s...
Solve each compound inequality. Graph the solution set, and write it using interval notation. -2x +1> -11 or x+1> 10
A bag contains 6 red balls and 4 black balls. If we draw 5 balls, with each one replaced before the next is drawn, what is the probability that at least 2 balls drawn will be red?
(a) Long ago, a wicked king was searching for a new wizard with whom to plot some devious schemes. He summoned to him three wizards who seemed especially promising, and let them into a small room,...
What is a parsimonious model?
With five production facilities, the company produces cardboard boxes, plastic and steel drums, aluminum bottles, and absorbent pouches and bags. Companies using their products ship everything from...
QUESTION 4 Which of the following is least appropriate for the budget cycle? 1. A fiscal year is identified by the calendar year within which it ends. 2. Each budget cycle is identified by the fiscal...
During a baseball practice session, the cutoff man A executes a throw to the third baseman B. If the initial speed of the baseball is v 0 = 130 ft/sec, what launch angle is best if the ball is to...
Refer to the Lincolnville School District bus data. Information provided by manufacturers of school buses suggests the mean maintenance cost per year is $4,400 per bus with a standard deviation of...
Refer to the previous exercise. Instead of 49, suppose that 64 Americans were surveyed about their weekly expenditures on coffee. Assume the sample mean remained the same. a. What is the 95%...
Obtain the unit-ramp response of the system defined by \[\begin{aligned}& y=\left[\begin{array}{ll}1 & 0\end{array} ight] \begin{array}{l}x_{1} \\x_{2}\end{array}\end{aligned}\] where $u$ is the...
As a job candidate in what way can I apply digital communications to ensure I thrive in the environment of recruiting by using social media for background checks
You hold a bond portfolio that consists of (i) a 4-year bond with a face value of $100 that pays an annual coupon of 10%, and (ii) a 2-year bond with a face value of $100 that pays an annual coupon...
Draw an original market equilibrium that describes the state of the market before the given scenario occurs. Clearly label both axis, label each a single supply curve and a single demand curve, and...
Analyze tools and/or metrics that a leader or manager should use to ensure that they are aligned and working together. Evaluate leadership strategies that could be employed to foster a positive...
Mexico has two main government programs that transfer income to rural households. PROCAMPO , which pays a set amount per acre to farmers who grew basic grains in a base year prior to the elimination...
Identify whether each of the following statements refers to a problem caused by a positive externality, a negative externality, imperfect information, imperfect competition, a public good, or none of...
Choose two matrices A and B with dimension 2 x 2. Calculate det A, det B, and det (AB). Repeat this process until you are able to discover how these three determinants are related. Summarize your...
Dole Pineapple Inc. is concerned that the 450 mL can of sliced pineapple is being overfilled. The population standard deviation is 0.85 mL. The quality control department took a random sample of 50...
Global TV news, in a segment on the price of gasoline, reported last evening that the mean price nationwide is $1.25 per litre for self-serve regular unleaded. A random sample of 35 stations in...
In recent years, interest rates on home mortgages have been lowered to less than 6.0%. However, a recent study shows that the rate charged on credit card debt is more than 14%. A sample of 10 credit...
Which of the following statements is not true regarding the $500 credit for dependent other than a qualifying child credit. Cannot be claimed on the same tax return if the child tax credit is also...
Grind Co. is considering replacing an existing machine. The new machine is expected to reduce labor costs by $127,000 per year for 5 years. Depreciation on the new machine is $57,000 compared with...
If John invested $20,000 in a stock paying annual qualifying dividends equal to 4% of his investment, what would the value of his investment be 5 years from now? Assume Johns marginal ordinary tax...

A sample of 81 observations is taken from a normal population with a standard deviation of 5.

Question:

Step by Step Answer:

38911 ...View the full answer

Statistical Techniques in Business and Economics

Students also viewed these Business questions