19&20

01:10:30 Time Remaining Return Submit 19 1 point A researcher wants to test whether participating in support groups will boost the immune system of people with AIDS. Her expectation is that participation will enhance immune functioning. For this purpose, she recruits 6 AIDS patients and randomly assigns half to an hour-long support group that meets once a week for six months and half to a solitary activity of the same duration and frequency, The table below presents the data she collected after the 6-month intervention. A higher score indicates better immune functioning. The immune functioning of the two groups was the same prior to the intervention. You can proceed as if all of the assumptions for the relevant statistical test to be valid have been met. Support Solitary Group Activity 1 Mean 13.1 11 Var 5 15 2 What is the critical value of the test statistic? O 196 3 O 2.3 O 164 4 O 2.1 5 20 1 point The Smart IQ test has a population mean () of 100 and a standard deviation () of 15. It has a normal distribution, The Elite Prep School receives an application from a 6 student who scores a 67. At what percentile did that student score? O There is not enough information to answer this question 7 O 1st lent urces O 25th 8 O 98th