Determine if each claim would best be tested with a hypothesis test on a mean or

Question

Determine if each claim would best be tested with a hypothesis test on a mean or a hypothesis test on a proportion. If the data is suitable for a hypothesis test on a mean, type "M", otherwise type "P" for a hypothesis test on a proportion. a) More than 75% of all students taking the SAT spent more than on preparation study materials. answer: ___ b) On average, the salary earned by graduate students in their last year of graduate school is less than,000. answer: ___ c) The mean time a person is on hold when calling the department of motor vehicles in Washburn County is less than 10 minutes. answer: ___ d) On average, fewer than 4 out of every 10 computers purchased last year were desk tops. answer ___ e) A majority of people believe there are no good candidates running for mayor in the upcoming election answer: ___

Explanation / Answer

Solution:-

a) P

Hypothesis test for proportion, becuase percentage is given.

b) M

Hypothesis test for mean, because average of the salary is given.

c) M

Hypothesis test for mean, because mean time is given.

d) P

Hypothesis test for proportion, becuase proportion of the purchased desktop is given.

e) P

Hypothesis test for proportion, becuase majority means more than 50%.

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