A survey claims that 9 out of 10 doctors (i.e., 90% ) recommend brand Z for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of doctors was taken. Suppose the test statistic is z_(0)=-1.95.
Write a conclusion for this hypothesis test at \alpha =0.05.
Choose the correct answer below.
Reject the null hypothesis. There is sufficient evidence to conclude that the actual proportion of doctors 2 recommend brand Z is less than 90%.
Do not reject the null hypothesis. There is sufficient evidence to conclude that the actual proportion of doctors who recommend brand Z is less than 90%.
Reject the null hypothesis. There is not sufficient evidence to conclude that the actual proportion of doctors who recommend brand Z is less than 90%.
Do not reject the null hypothesis. There is not sufficient evidence to conclude that the actual proportion of doctors who recommend brand Z is less than 90%.