Question

If the alternate hypothesis states that µ ≠ 4,000, where is the rejection region for the hypothesis test?

Select one:

a. In both tails

b. between the two tails

c. in the confidence interval

d. In the upper or right tail

e. In the lower or left tail

A group of  students were asked ‘Do you get worried about your exams?’.  of them replied as 'Frequently',  of them replied as 'Sometimes',  of them replied as 'Rarely' and  of them relied as 'never'. Estimate the proprtion of all students sometimes getting worried about the exams.

Select one:

a.

b.

c.

d.

e.

A random sample of  items is selected from a population. When computing a confidence interval for the population mean, what number of degrees of freedom should be used to determine the appropriate t-value?

Select one:

a. it cannot be determined since the confidence level is not given

b.

c.

d.

e.

Which of the following is a numerical quantity computed from the data of a sample and is used in reaching a decision on whether or not to reject the null hypothesis?

Select one:

a. significance level

b. test statistic

c. confidence level

d. parameter

e. critical value

As the standard deviation increases at fixed confidence level and sample size, the margin of error

Select one:

a. nothing can be said

b. sometimes increases sometimes decreases

c. decreases

d. does not change

e. increases

Answer 1

If the alternate hypothesis states that µ ≠ 4,000, where is the rejection region for the hypothesis test?

a. In both tails

.............

Which of the following is a numerical quantity computed from the data of a sample and is used in reaching a decision on whether or not to reject the null hypothesis?

b. test statistic

.............

As the standard deviation increases at fixed confidence level and sample size, the margin of error

e. increases

..........

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