Statistical Inferences Answers
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1
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What is the null hypothesis, , for this situation?
A
OptionB
OptionC
OptionD
Option1
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Which type of significance test should be used for this situation?
A
a left-tailed testB
a two-tailed testC
a right-tailed test1
Based on the z-statistic of –2.5 for the sample data, should the null hypothesis be rejected?
A
Yes, because the z-statistic lies within the critical region.B
Yes, because the z-statistic lies outside of the critical region.C
No, because the z-statistic lies within the critical region.D
No, because the z-statistic lies outside of the critical region.1
Based on the hypothesis test, what conclusion can you draw about the statistical claim that the average recharge time of the tablet computers is 3 hours?
A
The claim should be accepted.B
The claim should be rejected.C
There is not enough evidence to reject the claim.2
What is the alternative hypothesis,, for this situation?
A
OptionB
OptionC
OptionD
Option2
The speed limit on a road is 45 mph. You want to clock the speed of a random sample of cars to test the hypothesis that the average speed of cars is greater than the speed limit. What kind of test would you use?
A
a left-tailed testB
a two-tailed testC
a right-tailed testDid you find these answers helpful?
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