Find the sample size required to estimate the mean IQ of students currently taking a statistics course

Find the sample size required to estimate the mean IQ of students currently taking a statistics course. Assume that we want 95% confidence that the mean from the sample is within three IQ points of the true population mean. Also assume that ?=12 The same group of students took a non-proctored test; the results are given below. Use a 0.05 significance level to test the claim that the samples are from population with the same mean. Group 1: n=35, x?=71 s = 21.5 Group 2 n=37x?=37 s= 19.5 a) identify the null and alternative hypotheses. b.) find the value of the test statistic. c) find p-value and then determine the conclusion about the original claim. Was it rejected or did it fail to reject? d) Construct a 95% confidence interval.

Is this the question you were looking for? If so, place your order here to get started!