Question

A) In a recent Super Bowl, a TV network predicted that 38 % of the audience would express an interest in seeing one of its forthcoming television shows. The network ran commercials for these shows during the Super Bowl. The day after the Super Bowl, and Advertising Group sampled 89 people who saw the commercials and found that 36 of them said they would watch one of the television shows.

Suppose you are have the following null and alternative hypotheses for a test you are running:

H0:p=0.38H0:p=0.38
Ha:p>0.38Ha:p>0.38

Calculate the test statistic, rounded to 3 decimal places

z=z=

B)

Testing:

H0:p=0.33H0:p=0.33
H1:p≠0.33H1:p≠0.33

Your sample consists of 147 subjects, with 52 successes. Calculate the test statistic, rounded to 2 decimal places

z=z=

C)Testing:

H0:μ=16.715H0:μ=16.715
H1:μ>16.715H1:μ>16.715

Your sample consists of 25 subjects, with a mean of 17.4 and standard deviation of 4.37.

Calculate the test statistic, rounded to 2 decimal places.

t=t=

Answer 1