Can you help me those questions? Just answer is fine. Thank you.

[answerhappygod]

Can you help me those questions? Just answer is fine. Thank
you.

Can You Help Me Those Questions Just Answer Is Fine Thank You 1 (23.92 KiB) Viewed 21 times

3. What is 2/2 when a = 0.20? (a) 1.2816 (b) 0.8416 (c) 1.6449 (d) 2.3263 4. Suppose Adult IQs are normally distributed with a population standard deviation of 8. We sample 100 adults and find X = 31. What is the 98% confidence interval for the mean adult IQ? (a) (80.32672, 81.67328) b) (80.813896, 81.186104) (c) (79.13896, 82.86104) (d) (77.52986, 84.47014) 5. A test of hypothesis has the following details: Ho: 4 = 50 vs HaN > 50, n = 25, 0 = 3,0 = 0.05, X = 48.2, 0 is known and the data is normally distributed. What is the p-value and the correct decision for this test? (a) D-value = 0.0013, Do not reject Ho (b) P-value = 0.0013, Reject Ho (©) p-value = 0.9987, Reject Ho (d) P-value = 0.9987, Do not reject Ho 6. A test of hypothesis has the following details: Ho: M = 50 vs Hau < 50, n = 36,0 = 12, 0 = 0.01, X = 51, and O is known. What is the observed test statistic for this test? (2) -0.50 (b) 0.50 (c) 2 (d) -2