Question 1
A marketing study was conducted to compare the mean age of male and female purchasers of a certain product. Random and independent samples were selected for both male and female purchasers of the product. What type of analysis should be used to compare the mean age of male and female purchasers?
◦ An independent samples comparison of population proportions.
◦ An independent samples comparison of population means.
◦ A test of a single population mean.
◦ A paired difference comparison of population means.
Question 2
Calculate the degrees of freedom associated with a small-sample test of hypothesis for
assuming
and
◦ 31
◦ 30
◦ 33
◦ 15