Questions from Business Statistics

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

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

Q: a. For the chi-squared test for independence, what

a. For the chi-squared test for independence, 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 statistic...

Q: a. What is statistical quality control? b. Why

a. What is statistical quality control? b. Why are statistical methods so helpful for quality control?

Q: a. What is the purpose of the

a. What is the purpose of the

Q: a. What is the purpose of the R chart?

a. What is the purpose of the R chart? b. What is a typical sample size? c. How would you find the center line if you had no standard? d. How would you find the centerline if you did have a standard?...

Q: Stress levels were recorded during a true answer and a false answer

Stress levels were recorded during a true answer and a false answer given by each of six people in a study of lie-detecting equipment, based on the idea that the stress involved in telling a lie can b...

Q: a. What is the purpose of the percentage chart?

a. What is the purpose of the percentage chart? b. How large should the sample size be? c. How would you find the center line if you had no standard? d. How would you find the centerline if you did ha...

Q: a. What is a process? b. What is

a. What is a process? b. What is the relationship between a process and its sub processes? c. What is statistical process control?

Q: Why should you monitor a process? Why not just inspect the

Why should you monitor a process? Why not just inspect the results and throw away the defective ones?

Q: a. What kind of data set is appropriate for the sign

a. What kind of data set is appropriate for the sign test for the differences? b. What hypotheses are being tested? c. What assumption is required?