Author Question: From a group of 496 students, every 49th student starting with the 3rd student is selected. Identify ... (Read 39 times)

bucstennis@aim.com · **on:** Jul 25, 2018

From a group of 496 students, every 49th student starting with the 3rd student is selected. Identify the type of sampling used in this example.

A) Cluster sampling B) Simple random sampling
C) Stratified sampling D) Systematic random sampling

Question 2

Suppose that you want to perform a hypothesis test based on independent simple random samples to compare the means of two populations.

Further suppose that either the variable under consideration is normally distributed on each of the two populations or the sample sizes are large. True or false? If the population standard deviations are quite different, then using the pooled t-test can result in a significantly smaller Type I error probability than the one specified.
A) True B) False