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Multiple Choice Quiz
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1

The null hypothesis
A)Is a statement about the value of the population parameter.
B)Will always contain the equal sign.
C)Cannot include values less than 0.
D)Both a and b are correct.
2

The alternate hypothesis
A)Is accepted if the null hypothesis is rejected.
B)Will always contain the equal sign.
C)Tells the value of the sample mean.
D)None of the above.
3

The level of significance
A)Is frequently .05 or .01.
B)Can be any value between 0 and 1.
C)Is the likelihood of rejecting the null hypothesis when it is true.
D)All of the above.
4

A Type I error is
A)The correct decision.
B)A value determined from the test statistic.
C)Rejecting the null hypothesis when it is true.
D)Accepting the null hypothesis when it is false.
5

The critical value is
A)Calculated from sample information.
B)Cannot be negative.
C)The point that divides the acceptance region from the rejection region.
D)A value determined from the test statistic.
6

In a one-tailed test
A)The rejection region is in one of the tails.
B)The rejection region is split between the tails.
C)The p-value is always less than the significance level.
D)The p-value is always more than the significance level.
7

To conduct a one sample test of means and use the z distribution as the test statistic
A)We need to know the population standard deviation.
B)We can use the sample standard deviation provided n is at least 30.
C)We need np to be at least 5.
D)Both A and B are correct.
8

The p-value is
A)The same as the population proportion.
B)The same as the significance level.
C)The fraction of the population that has a particular characteristic.
D)The probability of finding a value of the test statistic this extreme when the null hypothesis is true.
9

Which of the following statements are correct when deciding whether to use the z or the t distribution?
A)Use z when the sample size is 30 or more.
B)Use z when we have a normal population and know the standard deviation.
C)Use t when the population is normal, the population standard deviation is not known, and n is less than 30.
D)All of the above statements are correct.







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