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business statistics
Questions and Answers of
Business Statistics
Pat guesses that the course in question has an exam scheduled on the last two daysof exam period only about 20% of the time (see For Example: “Minimizing loss andmaximizing gain for purchasing
Recall from For Example: “Expected value of purchasing an airline ticket” that Pat is purchasing an airplane ticket; the payoff table is in For Example: “Payoff tables for purchasing airline
Pat needs to purchase airplane tickets to fly home at the end of the term. The last exam schedule slot is Friday at 3 p.m., but Pat’s exams haven’t yet been scheduled. Exams are scheduled
Pat must decide which ticket to purchase (see For Example: “Actions, states of nature, and outcomes for purchasing airline tickets”). What is Pat’s payoff table?
Recall Pat’s payoff table for purchasing an airplane ticket from For Example: “Payoff tables for purchasing airline tickets.” What is Pat’s minimax choice? What is Pat’s minimum choice?
The airline company from Exercise 4, which is interested in the opinions of its frequent f lyer customers about its proposed new routes, has decided that different types of customers might have
A business magazine mailed a questionnaire to the human resources directors of all Fortune 500 companies and received responses from 23% of them. Those responding reported that they did not find that
A question posted on the Lycos website asked visitors to the site to say whether they thought businesses should be required to pay for their employees’ health insurance.Data from Section 3.6-
An intern for the consumer advocacy group ihas decided to make the survey process simpler by calling 150 of the members who attended the symposium on “Food Safety in the 21st Century” recently
The airline company in Exercise 4 has realized that some of its customers either don’t have email or don’t check it regularly. It decides to restrict the mailing to customers who have recently
A market research company maintains a database of applications of 3-D printing in industry worldwide. It records which industry the application is used in, whether the material used is a metal alloy
Blockchains employ sophisticated cryptography to store information (such as Bitcoin transactions) so that it cannot be changed. Additional security is provided by having several organizations
A research firm has permission from Twitter to access tweets about news. Every 24 hours, it classifies the tweets according to whether the news is true or fake, the novelty of the news on a scale of
Referring back to Understanding Your Data: "Canadian Unemployment Rate," many people are surprised that the employment rate and the unemployment rate don't add to \(100 \%\). How does that example
Your medical terminology instructor listed the following grades for the class out of a 75-point test:34, 36, 41 , 43, 44,49,50, 55,57, 60,64, 66, 67,67, 67,68,68,69, 70, 73a. Find the 90th
From the following list of number of discharges each day in September, compute the mean, median, mode, and range. Round the mean and median to one decimal point. University Hospital Number of
Use the following information to compute the ALOS and median LOS and range for Community Nursing Center. The discharge date is June 2, 20XX (a non-leap year).Round the ALOS to one decimal place.
The following table shows the LOS for a sample of 11 discharged patients. Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f.
Dr. Anderson, a new pediatrician at Community Physician's Clinic, wants to study his new patient's growth charts to determine if they are within the guidelines for weight for age. His last ten
Dr. Anderson wants to follow the guidelines that recommend a six-month-old infants should weigh 16.5 pounds. In what percentile is the 12.1 -pound-infant?
A coding supervisor recorded the following salaries for the seven coding professionals in her HIM department section as $15.25, $16.72, $17.23, $15.34, $ 15.93, $17.05, and $16.21. Find the first and
Last month, 10 patients between the ages of 11 and 13 were seen in their pediatrician's clinic. Their heights were recorded as 51, 57, 60, 51, 52, 49, 53, 57, 61 , and 50 inches. Determine the mean,
Community Physician's Clinic is examining the number of patients who make appointments by emails and if they actually keep the appointment date and time. They collected the following information for
Using the information in the question above, the Administrator of the Clinic wants to have everyone make appointments by email instead of by telephone. However, the HIM professional tells him .a.
A graph with a bell-shaped curve is referred to as having a __ .a. Normal distributionb. Bimodal distributionc. Binomial distributiond. Multimodal distribution
When a distribution is skewed to the right, this means it has (a) __ .a. Positive skewb. Negative skewc. No skewd. Multiskewed
Using the information below, determine the mean and median age and range of ages of the patients discharged. Round mean to one decimal place. LOS of 15 discharged patients Name Age Clinical Service
Decide whether the following statements have a positive or negative correlation: 1. Positive correlation 2. Negative correlation a. b. c d. e. People who suffer from depression have higher rates of
The table below lists the patients seen last month at Community Hospital with their age and cholesterol reading. Create a table using common age categories and these ranges for cholesterol. Community
1. Indicate whether a table or a graph is the preferred method of presentation in the following situations:a. Distribution by site, sex, race, and time period of all cancers in your healthcare
Which of the following graphs would be best to use to display the percentages of diagnoses seen at your mental health center?a. Frequency polygonb. Pie graphc. Bar graphd. Line graph
Physicians from the Community Physician's Clinic would like to demonstrate to the Community Hospital administration that additional exam rooms are needed to accommodate their patients. They ask the
The administration at Community Physician's Hospital are interested in determining if they need to increase the number of physicians in order to see patients in a timely manner. The administrator
What type of numerical data contains only a finite number of results?a. Continuousb. Discretec. Intervald. Ratio
When creating histograms, which is a true statement?a. Form classes of equal width.b. Always form frequency groups that do not overlap.c. Establish between four and 12 frequency groups.d. All of the
What do the wedges or divisions in a pie graph represent?a. Frequency groupsb. Various datac. Percentagesd. Classes
The following graph shows:a. Strong positive correlationb. Strong negative correlationc. Moderately positive correlationd. Moderately negative correlation
Which graph displays vertical bars to depict frequency distributions for continuous data?a. Histogramb. Line graphc. Pie graphd. Frequency distribution table
What is one of the simplest types of categorical data in which the values fall into unordered categories?a. Ordinalb. Nominalc. Ratiod. Interval
Which of the following graphs would be best for the cancer registrar to use to display the five -year survival rates of lung cancer patients in the years 20XX to 20XX at your hospital?a. Frequency
Which of the following graphs would be best to use to display the number of discharges by medical service for the past year?a. Line graphb. Bar graphc. Histogramd. Frequency polygon
A physician on your staff asked you to help her collect information on the effects of drinking alcohol during pregnancy and the birth weight of babies. You were asked to collect the following
The family practice department at University Medical School offered the following information to its advisory board about placement of family practice graduates in your state for the past five years:
When preparing a report for presentation, which of the following should be included? 1. Title of the report 2. Graphs will give more detail than tables 3. The narrative will be helpful if
In creating a frequency distribution table, which of the following statements is not a basic rule to follow?a. Choose classes that cover the smallest and largest values.b. Make certain that each item
The degree to which scientific observations actually measure or record what they purport to measure is referred to as .a. Integrityb. Validityc. Reliabilityd. Theory
The type of research that uses methods or numbers, including comparisons of the population and statistical analysis, to describe results is called .a. Qualitative researchb. Quantitative researchc.
A statement of the predicted relationship of what the researcher is studying is called a(n) .a. Educated guessb. Essayc. Theoryd. Hypothesis
Data can be misinterpreted in which of the following ways?a. Fabrication of datab. Graphical misrepresentationsc. Selection biasd. All of the above
The portion of the research in which the researcher explains the significance and findings of the study is called .a. Analyzing the datab. Drawing conclusionsc. Sample selectiond. Selecting the
Which type of research entails manipulation of a situation in some way in order to test a hypothesis?a. Correlational researchb. Experimental researchc. Evaluation researchd. Hypothetical research
Which of the following is the repeatability of scientific observations?a. Reliabilityb. Validityc. Theoryd. Integrity
Which data-collection method gathers data from a relatively large number of cases at a particular time?a. Surveyb. Observationc. Essayd. Experimental study
In which type of sample does the researcher rely on his or her opinion to select the subjects?a. Simple random sampleb. Judgment samplec. Cluster sampled. Quota sample
A tool used by the researcher to collect data is referred to as the __a. Surveyb. Instrumentc. Research mechanismd. Apparatus
The type of research describing events, persons, and so on without the use of numerical data is called:a. Qualitative researchb. Quantitative researchc. Theoretical researchd. Hypothetical research
A committee within an organization whose primary responsibility is to protect the rights and welfare of research subjects is referred to as .a. Research committeeb. Health information committeec.
What are generally the two types of research?a. Quantitative and qualitativeb. Basic and appliedc. Scientific and hypothetical •d. Theory and hypothesis
A method of observation in which the researcher observes and often speaks with the subjects in as free and natural an atmosphere as possible is called __a. Freedom of inquiryb. Conclusive inquiryc.
Given the following probabilities that the null hypothesis is true, determine whether to reject the null hypothesis or fail to reject the null hypothesis: 1. p
Identify which choices would be considered descriptive statistics and which would be considered inferential statistics. Of 500 randomly selected people in New York City, 210 people had 0+ blood.a.
Identify which choices would be considered descriptive statistics and which would be considered inferential statistics. On the last three Friday evenings, City Hospital diagnosed a number of heroin
The standard error of the mean comes from the standard deviation of many population means.a. Trueb. False
Create a null hypothesis for the following research question: What are the differences between emergency room shifts on medication errors?
Create a null hypothesis for the following research question: On a clinical trial of a new drug, what will be the effects over a currently used drug?
Reword the following research hypothesis to a null hypothesis: Smoking during pregnancy increases the risk of a child being born prematurely.
Reword the following research hypothesis to a null hypothesis: Regular exercise in older adults decreases blood pressure levels.
Based on the results below, how would you describe the relationship between heart attack patients being treated with aspirin and whether or not they lived? Male patients who lived Male patients who
Using the following information, determine if the differences between the means are significant. Medical Terminology Class Group A = Number of word elements remembered by students using flash cards
Given the following p values, which would be considered more significant? a. p0.3 b. p 0.02 c. p 0.25 C.
Given the following null hypothesis, give an example of a Type I error. H: There is no difference between the number of males or females who go to their primary care physician for an annual exam.
Given the following information, determine the 68 percent, 95 percent, and 99.7 percent confidence intervals. Round to two decimal places. x=4.33, SE-3
Your administrator has asked you to generate a report that gives the number of hypertension patients last year. This is an example of __a. Descriptive analyticsb. Predictive analyticsc. Prescriptive
The medical director has asked for a report that will tell him the probability of one of his patients with hypertension will result in a cerebrovascular accident. This is an example of .a.
The medical director would also like to know if he should try a new medication to prevent one of his hypertensive patients from having a CV A. This is an example of __a. Descriptive analytics _b.
Community Hospital is using a system that will help them detect when intracranial pressure becomes high in patients with a recent CV A that will quickly send an alert to the physician. This is an
A managed care organization is using a system that examines the past healthcare behaviors of their patients to determine their future costs for their healthcare, This is an example of ,a. Descriptive
The term that describes the use of most current scientific research to treat patients is referred to as ,a. Big datab. Evidence-based medicinec. Predictive analyticsd. Real-time analytics
One of the pediatricians at Community Physician's Clinic worked with a software vendor to get a display of the patients she currently has in the hospital on her smart phone that lets her know current
One of the questions on the patient satisfaction survey that is sent to the patient after discharge asks for the number of times the nurses checked the patient's vital signs in a day. This is an
A statewide database is used by your performance improvement department each month to compare other facilities ' readmission rates to your facility's rates, This is an example of ,a. Internal datab.
Which of the following are used to test hypotheses or make decisions about the popula tion?a. Descriptive statisticsb. Descriptive analyticsc. Inferential statisticsd. External data
The process of extracting and analyzing large volumes of data from a database for the purpose of identifying hidden and sometimes subtle relationships or patterns and using those relationships to
Your facility is looking at new software that will improve the outcomes of patients by giving recommendations on how to treat the patient in various disease categories. This is an example of .a.
The business office at Community Hospital is looking at software that can help them with decreasing their fraud and abuse cases. The software claims to be able to flag those patients that would most
The physicians and pharmacy at Community Hospital have access to controlled substance history information immediately at the patient's bedside which now allows the physician to make better decisions
Using the information in the table below, calculate the rates requested for Community Hospital. In this exercise, deaths are included in the discharges. Round to two decimal places. Discharges and
Using the information given in the table below, calculate the rates requested. In this exercise, the deaths are included in the discharges. Round to two decimal places. Service Medicine University
Using the information in the table below, calculate the postoperative infection and postoperative death rates for University Hospital during this semiannual period. Round to two decimal places.
Using the information in the table below, calculate the rates requested. Round to two decimal places. Community Hospital Semiannual Report January-June, 20XX Deaths Infections Live No. of Patients
Using the information below, calculate (the rates requested. In this exercise, the deaths are included m the discharges. Round to two decimal places. Community Hospital Infection Prevention Committee
Using the information in the table below for University Hospital, calculate the complication rate for each service and the total for this quarterly period. Round to two decimal places. Service
Using, the information below, calculate the complication rates by physician and the total for this semiannual period for Community Hospital. Round to two decimal places. Community Hospital
Using the information in the table below, calculate the C-section rate and the vaginal delivery rate at University Hospital for the semiannual period. Round to two decimal places. Admissions
Using the information in the table below, calculate the C-section rate, the newborn death rate, and the fetal death rate at University Hospital for the month of July, Round to two decimal places.
Using the information in the table below, calculate the consultation rate at Community Hospital for each service and the total for the semiannual period. Round to two decimal places. Discharges and
The hospital-acquired infection rate (including newborns) is __ .a. 0.03%b. 0.30%c. 3.00%d. 30.00%
The consultation rate (including newborns) is _ _ .a. 0.03%b. 0.30%c. 3.09%d. 30.99%
What is the postoperative infection rate?a. 0.25%b. 0.025%c. 2.53%d. 25.30%
A hospital reported the following statistics for the past year: births, 1,702; deliveries, 1,708; C-sections, 360; and obstetrical discharges, 1,827. The C-section rate for that• year IS •a.
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