Questions from Business Statistics

Q: Use an on parametric test to see whether the median experience of

Use an on parametric test to see whether the median experience of employees differs significantly from 3 years.

Q: For each of the following situations, say whether parametric or nonparametric

For each of the following situations, say whether parametric or nonparametric methods would be preferred. Give a reason for your choice and indicate how serious a problem it would be to use the other...

Q: Consider the profits of the building materials firms in the Fortune 500

Consider the profits of the building materials firms in the Fortune 500, given in Table 16.4.1. a. Draw a histogram of these profit percentages. Describe the distribution. b. Find the average and the...

Q: a. For a continuous population, which measure of typical value

a. For a continuous population, which measure of typical value is the sign test concerned with? b. What probability distribution does this test rely on? c. Suppose the population is discrete and an ap...

Q: a. Can the sign test be used with quantitative data?

a. Can the sign test be used with quantitative data? Why or why not? b. Can the sign test be used with ordinal data? Why or why not? c. Can the sign test be used with nominal data? Why or why not?

Q: a. For what kind of data set is the chi-

a. For what kind of data set is the chi-squared test for equality of percentages appropriate? b. What are the reference values for this test? c. What are the hypotheses? d. How are the expected counts...

Q: Describe the similarities and differences between the sign test and the t

Describe the similarities and differences between the sign test and the t test.

Q: a. Can the sign test for the differences be used with

a. Can the sign test for the differences be used with quantitative data? Why or why not? b. Can the sign test for the differences be used with ordinal data? Why or why not? c. Can the sign test for th...

Q: No matter how closely the production process is monitored, some chips

No matter how closely the production process is monitored, some chips will work faster than others and be worth more in the marketplace. The goal is to make this number as high as possible, and improv...

Q: a. For the chi-squared test for equality of percentages

a. For the chi-squared test for equality of percentages, what do you conclude if the chi-squared statistic is larger than the value in the chi-squared table? b. What do you conclude if the chi-squared...