STATS 5 MCQ NEED IN 10 MINS JUST ANSWERS

1. The manager of the quality department for a tire manufacturing company wants to know the average tensile strength of rubber used in making a certain brand of radial tire.  The population is normally distributed and the standard deviation is known.  She uses a Z test to test the null hypothesis that the mean tensile strength is less than or equal to 800 pounds per square inch.  The calculated Z test statistic is a positive value that leads to a p-value of 0.067 for the test.

If the significance level, alpha, is 0.05, the null hypothesis would be rejected.

 True

 False

Question 2

1. A Type II error is failing to reject a false null hypothesis.

 True

 False

Question 3

1. What value of alpha would lead to the decision to "reject Ho" for the mean greater than 10 if Xbar =11, s=2, and n=36?

		0.10
		0.05
		0.01
		All of the above

Question 4

1. When testing the null hypothesis about a single population variance, one compares the computed test statistic for significance with a value from the ________ distribution

		t
		Z
		Binomial
		Chi-square
		Poisson

Question 5

1. What value of alpha would lead to the decision to "fail to reject Ho" for the mean greater than 10 if Xbar =11, s=2, and n=36?

		0.10
		0.05
		0.001
		All of the above