The commercialism of the u. s. space program has been a topic of great interest since dennis tito paid $20 million to ride along with the russian cosmonauts on the space shuttle.8 in a survey of 500 men and 500 women, 20% of the men and 26% of the women responded that space should remain commercial free.
a. does statistically significant evidence exist to suggest that there is a difference in the population proportions of men and women who think that space should remain commercial free? use a .05 level test.
b. why is a statistically significant difference in these population proportions of practical importance to advertisers?