We are finding the confidence interval for the mean. If the sample size is 15 and we know the population standard deviation, then we should use the ________ 1 point Students t distribution F distribution Z distribution None of the above 11. Question 11 Suppose we wish to test the claim that the average length is greater than 11.3 Mean = 11.9, Standard Deviation = 2.1, and n= 16, assume alpha = 0.05 When we conduct the hypothesis test, our test statistic, p-value and decision will be 1 point 1.143, 0.1355, Reject the Null 1.143, 0.1265, Reject the Null 1.143, 0.1265, Fail to Reject the Null 1.143, 0.1355, Fail to Reject the Null