To test Ho: μ = 107 versus H₁: μ# 107 a simple random sample of size n = 35 is obtained. Complete parts a through e below. Click here to view the t-Distribution Area in Right Tail. OA. Yes, because the sample is random. OB. Yes, because n ≥ 30. OC. No, because the test is two-tailed. D. No, because n ≥ 30. (b) If x= 104.0 and s=5.7, compute the test statistic. The test statistic is to = -3.11. (Round to two decimal places as needed.) (c) Draw a t-distribution with the area that represents the Palue shaded. Choose the correct graph below. OA. Q OB. O C. SE

9. Given that IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15, the proportion of people with IQs above 130 is approximately а. 95% b. 68% с. 5% d. 2.5%

(-b)2+b

Q4 7.4