SHA scores range from 0-200. U.S. college students mean score is 115 with a std dev of about 30. A teacher suspects older students have better attitudes and gives 25 students who are 30 years of age or older the test. Their mean score is x=133.2. Assuming that o=30 for population of older students carry out a test of Ho: u=115, Ha: u>115. Report the p-value (which I calculated and came up w/ .0012. I’m struggling with a sketch to illustrate it. My conclusion is older students have a higher SSHA mean. So please do a sketch (showing p-value) and verify if my conclusion is correct.
