A group of 49 randomly selected students has a mean age of 22.4 years. Assume the population standard deviation is 3.8. Construct a 98% confidence interval for the population mean.

(15 points) Evaluate: §#8747;2+xx3+9xdx

The P-value for a hypothesis test is P = 0.034. Do you reject or fail to reject H0 when the level of significance is α = 0.01?

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.  Right-tailed test, z = 0.52, α = 0.05

Using the problem in number 18. State the test statistics.

Using the problem in number 6. Choose the correct hypotheses.

Which weapon was not a new technology used during World War I? 

Kamikaze pilots flew suicide attacks for Japan. 

The Federal Deposit Insurance Corporation (FDIC) 

William Jennings Bryan