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Question 1A researcher wants to study the spending habits of customers of a local shopping mall. The mall manager claims that the average spending per customer is $70 but the researcher believes that the average is less than $70. A simple random sample of 350 shoppers is obtained. The sample average is $65 and the sample SD is $27. Find the value of the test statistic.-3.47-2.36-0.143.45-2.08Question 2A researcher wants to study the spending habits of customers of a local shopping mall. The mall manager claims that the average spending per customer is $70 but the researcher believes that the average is less than $70. A simple random sample of 350 shoppers is obtained. The sample average is $65 and the sample SD is $27. Find the p-value.1.90%0.028%1.79%3.57%25%Question 3In a certain city there are 100000 persons age 18 to 24. A simple random sample of 500 such persons is drawn of whom 198 turn out to be currently enrolled in college. If possible find a 95% confidence interval for the percentage of all persons age 18 to 24 in that city who are currently enrolled in college.36.72% to 45.48%not possible33.06% to 40.41%none of these35.22% to 43.98%Question 4A researcher wants to study the spending habits of customers of a local shopping mall. The mall manager claims that the average spending per customer is $70 but the researcher believes that the average is less than $70. A simple random sample of 350 shoppers is obtained. The sample average is $65 and the sample SD is $27. Find the alternative hypothesis.the population average is greater than $70none of thesethe population average is less than $70the sample average is less than $70the population average is $70

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