Questions from Business Statistics


Q: Students in an Intro Stats course were asked to describe their politics

Students in an Intro Stats course were asked to describe their politics as Liberal, Moderate, or Conservative. Here are the results: 1. What percent of the class is male? 2. What percent of the class...

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Q: Supermarkets often place similar types of cereal on the same supermarket shelf

Supermarkets often place similar types of cereal on the same supermarket shelf. We have data on the shelf as well as the sugar, sodium, and calorie content of 77 cereals. Does sugar content vary by sh...

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Q: We also have data on the protein content of the cereals in

We also have data on the protein content of the cereals in Exercise 19 by their shelf number. Here are the boxplot and ANOVA table: 1. What are the null and alternative hypotheses? 2. What does the AN...

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Q: To see how much of a difference time of day made on

To see how much of a difference time of day made on the speed at which he could download files, a college sophomore performed an experiment. He placed a file on a remote server and then proceeded to d...

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Q: A pharmaceutical company tested three formulations of a pain relief medicine for

A pharmaceutical company tested three formulations of a pain relief medicine for migraine headache sufferers. For the experiment, 27 volunteers were selected and 9 were randomly assigned to one of thr...

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Q: Refer to the experiment in Exercise 8 . After analyzing his data

Refer to the experiment in Exercise 8 . After analyzing his data the student reports that the F-ratio for Tire Pressure is 4.29 with a P-value of 0.030, the F-ratio for Acceleration is 2.35 with a P-v...

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Q: The National Highway Transportation Safety Administration runs crash tests in which stock

The National Highway Transportation Safety Administration runs crash tests in which stock automobiles are crashed into a wall at 35 mph with dummies in both the passenger and the driver seats. The THO...

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Q: An experiment on mung beans was performed to investigate the environmental effects

An experiment on mung beans was performed to investigate the environmental effects of salinity and water temperature on sprouting. Forty beans were randomly allocated to each of 36 petri dishes that w...

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Q: A retrospective study examined the link between baldness and the incidence of

A retrospective study examined the link between baldness and the incidence of heart disease. In the study, 1435 middle-aged men were selected at random and examined to see whether they showed signs of...

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Q: The Chapter 3 Step-By-Step looked at a Swedish

The Chapter 3 Step-By-Step looked at a Swedish study that asked 6272 men how much fish they ate and whether or not they had prostate cancer. (Data in Fish diet) Here are summary counts: 1. Comment on...

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