Refer to Exercise 5.84. If n = 20 questionnaires are sent out,
a. What is the average number of questionnaires that will be returned?
b. What is the standard deviation of the number of questionnaires that will be returned?
c. If x = 10 of the 20 questionnaires are returned to the company, would you consider this to be an unusual response? Explain.
Exercise 5.84
A public opinion research firm claims that approximately 70% of those sent questionnaires respond by returning the questionnaire. Twenty such questionnaires are sent out, and assume that the president's claim is correct.