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Question: A civil engineering student, working on his thesis, plans a survey to determine the proportion of all current drivers in his university town that regularly use their seat belt. He decides to interview his classmates in the three classes he is currently enrolled.
(a) What is the population of interest?
(b) Do the student's classmates constitute a simple random sample from the population of interest?
(c) What name have we given to the sample that the student collected?
(d) Do you think that this sample proportion is likely to overestimate or underestimate the true proportion of all drivers who regularly use their seat belt?
In a one-tail test involving a sample mean, the p-Value is found to be equal to 0.10. If the test had been two-tail instead of one-tail, the p-Value would have been
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A survey covering 0 different suburbs in Dallas found the average price of gasoline to be $3.924 per gallon with a population standard deviation of $0.053. What critical value shoiuld be used to test the claim using a = 0.01?
Describe the assumptions that must hold true to apply the one-way analysis of variance procedure to test hypotheses.
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Neither married nor a college graduate? (answer should be a probability, that is, a number between 0 and 1). Married but not a college graduate? (answer should be a probability, that is, a number between 0 and 1).
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