1.

A formal hypothesis test is to be conducted using the claim that the mean body temperature is equal to 98.6 degrees Fahrenheit.

a. Identify the symbolic form of the null hypothesis.

b. Identify the symbolic form of the alternative hypothesis.

c. Is the test two-tailed, left-tailed or right-tailed? Explain.

d. What possible conclusions can be made about the null hypothesis?

e. After performing the hypothesis test, the p-value is found to be 0.034. Using a significance level of 0.05, should you reject or fail to reject the null hypothesis? Explain.

f. If the decision was to reject the null hypothesis, how would you state the final conclusion that addresses the original claim?

2.

a. In general, what is a Type I error?

b. in general, what is a type 2 error?

c. Given the claim that the proportion of husbands taller than their wives is less than 0.9, write the statement that identifies a Type I error.

d. Using the same claim from part c, write the statement that identifies a Type II error.

3.

Determine whether the hypothesis test involves a sampling distribution of means that is a normal distribution, Student t distribution or neither.The sample data appear to come from a normally distributed population with = 28. Explain.

Claim: = 977

Sample data: n = 25,= 984, s = 25

4.

In a recent poll of 737 adults, 92% said that they do not open unfamiliar emails.

Use a 0.01 significance level to test the claim that more than 75% of adults do not open unfamiliar emails.

a. Identify the null and alternative hypothesis.

b. Is the test two-tailed, left-tailed or right-tailed? Explain.

c. What is the test-statistic?

d. What is the p-value?

e. What is the critical value?

f. What is your decision; Reject or fail to reject the null hypothesis? Explain using the results from part d or e.

g. State the final conclusion which addresses the original claim.

5.

Find the critical value or values of 2 based on the given information.Ha: > 26.1, n = 9, = 0.01