[solution] » 4. (6 points) A researcher wants to determine if an experimental drug significantly affects the b

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4. (6 points) A researcher wants to determine if an experimental drug significantly affects the body temperature. Seven test subjects are randomly selected and the body temperature of each subject is measured (initial temperature). After that, the subjects are given the drug and after 60 minutes the body temperature of each subject is measured again (follow-up temperature). The results are given in the StatCrunch dataset ?body_temperature_study?. We know that the body temperature is a normally distributed variable. Data set: https://www.statcrunch.com/app/index.php?dataid=595480

 Test if the drug significantly affects the body temperature.

- What test will you use?

- State H0 and H1 for this test.

- Provide the p-value and make a final conclusion about the data using the significance level of 0.01.

6. (6 points) Suppose, you wish to compare salaries in the manufacturing and construction industries. You obtained a random sample of 10 manufacturing workers and another random sample of 10 construction workers. The annual salaries for each individual (in thousands of dollars) are given in the StatCrunch dataset ?comparing_industry_salaries?. Assume that the data exhibit significant deviations from normality and the t-test is not applicable. 

Data set: https://www.statcrunch.com/app/index.php?dataid=595490

Test if the salaries in these two industries are significantly different.

- What test will you use?

- State H0 and H1 for this test.

- Provide the p-value and make a final conclusion about the data using the significance level of 0.01.

4. (6 points) A researcher wants to determine if an experimental drug significantly affects the

 

body temperature. Seven test subjects are randomly selected and the body temperature of each

 

subject...

 

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Oct 14, 2020

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