Hypothesis Testing-Means and Proportions Write all of the 4 of the steps for each of the tests below.
1. A principal at a school is worries that his students are below average intelligence. A random sample of 30
students' IQ scores has a mean of 96. Given that IQ scores are Normally distributed with a mean of 100
and standard deviation of 15, is there sufficient evidence to support the principal's claim? Test the claim at
5% significance level.