A) No, because the test value -1.46 is in the critical region.

B) No, because the test value -2.73 is in the noncritical region.

C) Yes, because the test value -2.73 is in the critical region.

D) Yes, because the test value -2.48 is in the critical region.

6. Is the statement H0 : m=8 a valid null hypothesis?

A)Yes, this is a statement that compares a parameter to a value.

B) Yes, this is a statement that compares two parameters.

C) No, equalities are not permitted in a null hypothesis.

D) No, there is no parameter contained in this statement.

7. Nationwide, the average waiting time until an electric utility customer service representative answers a call is 300 seconds per call. The Gigantic Kilowatt Energy Company took a sample of 50 calls and found that, on the average, they answered in 220 seconds per call with a standard deviation of $30. Can the company claim that they are faster than the average utility?

A) Yes, because -18.86 falls in the critical region.

B) No, because -2.67 falls in the critical region.

C) Yes, because -0.38 falls in the noncritical region.

D) No, because -0.38 falls in the critical region.

10. A doctor believes that the standard deviation of systolic blood pressure is 450. A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and alpha = 0.01. What are the crtical values?

A) 9.262 and 44.181

B) 13.091 and 35.172

C) 13.848 and 36.415

D) 11.524 and 44.314

11. Dr. Christina Cuttleman, a nutritionist, claims that the average number of calories in a serving of popcorn is 75 with a standard deviation of 7. A sample of 50 servings of popcorn yields an average of 78 calories. Check Dr. Cuttleman's claim at alpha = 0.05.

If ANYONE can help me that either knows how to do this or knows someone else that can, PLEASE! :shakehead