A study compared the number of hours of relief provided by five different brands of antacid administered to 25 different people, each with stomach acid considered strong. The results are given in the following table:
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Problem-26: Chi-Square and Analysis of Variance
Problems: Chi-Square and Analysis of Variance
Problem-01: Chi-Square and Analysis of Variance
A brand manager is concerned that her brand’s share may be unevenly distributed through-out the coun...
Problem-02: Chi-Square and Analysis of Variance
A brand manager is concerned that her brand’s share may be unevenly distributed through-out the coun...
Problem-03: Chi-Square and Analysis of Variance
An advertising firm is trying to determine the demographics for a new product. They have randomly se...
Problem-04: Chi-Square and Analysis of Variance
Develop a table of observed and expected frequencies for this problem.
Problem-05: Chi-Square and Analysis of Variance
An advertising firm is trying to determine the demographics for a new product. They have randomly se...
Problem-06: Chi-Square and Analysis of Variance
An advertising firm is trying to determine the demographics for a new product. They have randomly se...
Problem-07: Chi-Square and Analysis of Variance
To see whether silicon chip sales are independent of where the U.S. economy is in the business cycle...
Problem-08: Chi-Square and Analysis of Variance
To see whether silicon chip sales are independent of where the U.S. economy is in the business cycle...
Problem-09: Chi-Square and Analysis of Variance
A financial consultant is interested in the differences in capital structure within different firm s...
Problem-10: Chi-Square and Analysis of Variance
A newspaper publisher, trying to pinpoint his market’s characteristics, wondered whether newspaper r...
Problem-11: Chi-Square and Analysis of Variance
An educator has the opinion that the grades high school students make depend on the amount of time t...
Problem-12: Chi-Square and Analysis of Variance
At the 0.10 level of signifi cance, can we conclude that the following 400 observations follow a Po...
Problem-13: Chi-Square and Analysis of Variance
After years of working at a weighing station for trucks, Jeff Simpson feels that the weight per truc...
Problem-14: Chi-Square and Analysis of Variance
Below is an observed frequency distribution. Using a normal distribution with μ = 5 and σ = 1.5,
Fi...
Problem-15: Chi-Square and Analysis of Variance
At the 0.05 level of signifi cance, can we conclude the following data follow a Poisson distribution...
Problem-16: Chi-Square and Analysis of Variance
Louis Armstrong, salesman for the Dillard Paper Company, has five accounts to visit per day. It is s...
Problem-17: Chi-Square and Analysis of Variance
The computer coordinator for the business school believes the amount of time a graduate student spen...
Problem-18: Chi-Square and Analysis of Variance
In order to plan how much cash to keep on hand in the vault, a bank is interested in seeing whether ...
Problem-19: Chi-Square and Analysis of Variance
The post offi ce is interested in modeling the mangled-letter problem. It has been suggested that an...
Problem-20: Chi-Square and Analysis of Variance
A state lottery commission claims that for a new lottery game, there is a 10 percent chance of getti...
Problem-21: Chi-Square and Analysis of Variance
Dennis Barry, a hospital administrator, has examined past records from 210 randomly selected 8-hour ...
Problem-22: Chi-Square and Analysis of Variance
A large city fire department calculates that for any given precinct, during any given 8-hour shift, ...
Problem-23: Chi-Square and Analysis of Variance
A diligent statistics student wants to see whether it is reasonable to assume that some sales data h...
Problem-24: Chi-Square and Analysis of Variance
A supermarket manager is keeping track of the arrival of customers at checkout counters to see how m...
Problem-25: Chi-Square and Analysis of Variance
A professional baseball player, Lon Dakestraw, was at bat fi ve times in each of 100 games. Lon clai...
Problem-26: Chi-Square and Analysis of Variance
A study compared the number of hours of relief provided by five different brands of antacid administ...
Problem-27: Chi-Square and Analysis of Variance
Three training methods were compared to see whether they led to greater productivity after training....
Problem-28: Chi-Square and Analysis of Variance
The following data show the number of claims processed per day for a group of four insurance company...
Problem-29: Chi-Square and Analysis of Variance
Given the measurements in the four samples that follow, can we conclude that they come from populati...
Problem-30: Chi-Square and Analysis of Variance
The manager of an assembly line in a clock manufacturing plant decided to study how different speeds...
Problem-31: Chi-Square and Analysis of Variance
We are interested in testing for differences in the palatability of three spicy salsas: A, B, and C....
Problem-32: Chi-Square and Analysis of Variance
The supervisor of security at a large department store would like to know whether the store apprehen...
Problem-33: Chi-Square and Analysis of Variance
An Introduction to Economics course is offered in 3 sections, each with a different instructor. The ...
Problem-34: Chi-Square and Analysis of Variance
The manufacturer of silicon chips requires so-called clean rooms, where the air is specially filtere...
Problem-35: Chi-Square and Analysis of Variance
A lumber company is concerned about how rising interest rates are affecting the new housing starts i...
Problem-36: Chi-Square and Analysis of Variance
Genes-and-Jeans, Inc., offers clones of such popular jeans as Generic, DNA, RNA, and Oops. The store...
Problem-37: Chi-Square and Analysis of Variance
The Government Accounting Office (GAO) is interested in seeing whether similar-sized offices spend ...
Problem-38: Chi-Square and Analysis of Variance
In Bigville, a fast-food chain feels it is gaining a bad reputation because it takes too long to ser...
Problem-39: Chi-Square and Analysis of Variance
LWP is a large multinational company, having more than 2000 employees under its payroll. The managem...
Problem-40: Chi-Square and Analysis of Variance
The standard deviation of a distribution is hypothesized to be 50. If an observed sample of 30 yield...
Problem-41: Chi-Square and Analysis of Variance
Given a sample standard deviation of 6.4 from a sample of 15 observations, construct a 90 percent co...
Problem-42: Chi-Square and Analysis of Variance
MacroSwift has designed a new operating system that will revolutionize the computing industry. The o...
Problem-43: Chi-Square and Analysis of Variance
MacroSwift has designed a new operating system that will revolutionize the computing industry. The o...
Problem-44: Chi-Square and Analysis of Variance
A psychologist is aware of studies showing that the variability of attention spans of 5-year olds ca...
Problem-45: Chi-Square and Analysis of Variance
In checking its cars for adherence to emissions standards set by the government, an automaker
measu...
Problem-46: Chi-Square and Analysis of Variance
A bank is considering ways to reduce the costs associated with passbook savings accounts. The bank h...
Problem-47: Chi-Square and Analysis of Variance
Sam Bogart, the owner of the Play-It-Again Stereo Company, offers 1-year warranties on
all the ster...
Problem-48: Chi-Square and Analysis of Variance
For two populations thought to have the same variance, the following information was found.
A sampl...
Problem-49: Chi-Square and Analysis of Variance
In our study of comparisons between the means of two groups, it was noted that the most
common form...
Problem-50: Chi-Square and Analysis of Variance
From a sample of 25 observations, the estimate of the standard deviation of the population
was foun...
Problem-51: Chi-Square and Analysis of Variance
Mr. Raj, an investor, has narrowed his search for a mutual fund down to the Oppy fund or the
MLPFS ...
Problem-52: Chi-Square and Analysis of Variance
An insurance company is interested in the length of hospital-stays for various illnesses. The
compa...
Problem-53: Chi-Square and Analysis of Variance
Nation’s Broadcasting Company is interested in the number of people who tune in to their hit
shows ...
Problem-54: Chi-Square and Analysis of Variance
The HAL Corporation is about to unveil a new, faster personal computer, PAL, to replace its
old mod...
Problem-55: Chi-Square and Analysis of Variance
Two brand managers were in disagreement over the issue of whether urban homemakers had
greater vari...
Problem-56: Chi-Square and Analysis of Variance
Two competing ice cream stores, Yum-Yum and Goody, both advertise quarter-pound scoops
of ice cream...
Problem-57: Chi-Square and Analysis of Variance
The post office is concerned about the variability in the number of days it takes a letter to go
fr...
Problem-58: Chi-Square and Analysis of Variance
For the following contingency table, calculate the observed and expected frequencies and the
chi-sq...
Problem-59: Chi-Square and Analysis of Variance
Marketers know that tastes differ in various regions of the country. In the rental car business,
an...
Problem-60: Chi-Square and Analysis of Variance
What probability distribution is used in each of these types of statistical tests?
(a) Comparing tw...
Problem-61: Chi-Square and Analysis of Variance
What probability distribution is used in each of these types of statistical tests?
(a) Comparing th...
Problem-62: Chi-Square and Analysis of Variance
Retail stores set prices, but manufacturers have an interest in fi nal retail price as this is part ...
Minhajur Rahaman
