A group of students were asked if they carry a credit card T

A group of students were asked if they carry a credit card. The responses are listed in the table. If a student is selected at random, find the probability that he or she is a sophomore and owns a credit card. Round your answers to three decimal places. Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H_0 for the level of significance alpha. Two-tailed test z = 1.95 alpha = 0.05

Solution

24) Here number of studens who are sophosphere and fishermen are 22. Total number of students is 100

hence prob=0.22

A)0.220

25) P value=P(Z>1.95)=0.9744

here as p value > alpha, So we fail to reject H0

B)0.9744