A safety group claims that the mean speed of drivers on a highway exceeds the po
ID: 3238122 • Letter: A
Question
A safety group claims that the mean speed of drivers on a highway exceeds the posted speed limit of 65 miles per hour (mph). To investigate the safety group's claim, which of the following statements is appropriate?
The null hypothesis is that the mean speed of drivers on this highway is less than 65 mph.
The null hypothesis is that the mean speed of drivers on this highway is greater than 65 mph.
The alternative hypothesis is that the mean speed of drivers on this highway is less than 65 mph.
The alternative hypothesis is that the mean speed of drivers on this highway is greater than 65 mph
A safety group claims that the mean speed of drivers on a highway exceeds the posted speed limit of 65 miles per hour (mph). To investigate the safety group's claim, which of the following statements is appropriate?
The null hypothesis is that the mean speed of drivers on this highway is less than 65 mph.
The null hypothesis is that the mean speed of drivers on this highway is greater than 65 mph.
The alternative hypothesis is that the mean speed of drivers on this highway is less than 65 mph.
The alternative hypothesis is that the mean speed of drivers on this highway is greater than 65 mph
Explanation / Answer
Answer
The alternative hypothesis is that the mean speed of drivers on this highway is greater than 65 mph
Explanation:
The alternate hypothesis (H1) describes what will be concluded if the null hypothesis is rejected. The null hypothesis always claims there is no change.
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