1. In a test of hypothesis H0. μ = 50 vs Ha: μ ≠ 50, consider a sample of n = 100, sample mean = 49.4 and sample standard deviation, s = 4.1. Find and interpret the p-value for the test, using α =...

1. In a test of hypothesis H0. μ = 50 vs Ha: μ ≠ 50, consider a sample of n = 100, sample mean = 49.4 and sample standard deviation, s = 4.1. Find and interpret the p-value for the test, using α = 0.01. The p-value is?

2. To test the hypothesis that eating fish makes one smarter, a random sample of 12 persons take a fish oil supplement for one year and then are given an IQ test. Here are the results: 116        111        101        120        99           94           106        115        107  101        110        92. Your alternative hypothesis is?

3. The clinical trial for a new drug results in a p-value of 0.15. What decision should the scientists make?