Please Solve This QuestionQuestion Number 04A marketing research analyst collects data for a random sample of 100 customers out of the 4,000 who purchased a particular “coupon special.” The 100 people spent a sample average of in the store with a standard deviation of . Before seeing these sample results, the marketing manager had claimed that the average purchase by those responding to the coupon offer would be at least (not less than) $25.00. Can this claim be rejected, using the 5 percent level of significance?A survey conducted by a research institute lists median salaries for associate professors of statistics at public sector institutions and at private sector institutions in Pakistan. Assume that a sample of 100 associate professors from public sector institutions has an average salary of PKR 72,000 per month with a standard deviation of PKR 6000. Assume also that a sample of 150 associate professors from private sector institutions has an average salary of PKR 78,000 with a standard deviation of PKR 5000. Test the hypothesis that the mean salary for associate professors in private institutions is PKR 1500 higher than for those in other institutions. Use a 0.01 level of significance.

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Description: Please Solve This QuestionQuestion Number 04A marketing research analyst collects data for a random sample of 100 customers out of the 4,000 who purchased a particular “coupon special.” The 100 people spent a sample average of in the store with a st

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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A marketing research analyst collects data for a random sample of 100 customers out of the 4,000 who purchased a particular “coupon special.” The 100 people spent a sample average of in the store with a standard deviation of . Before seeing these sample results, the marketing manager had claimed that the average purchase by those responding to the coupon offer would be at least (not less than) $25.00. Can this claim be rejected, using the 5 percent level of significance?
A survey conducted by a research institute lists median salaries for associate professors of statistics at public sector institutions and at private sector institutions in Pakistan. Assume that a sample of 100 associate professors from public sector institutions has an average salary of PKR 72,000 per month with a standard deviation of PKR 6000. Assume also that a sample of 150 associate professors from private sector institutions has an average salary of PKR 78,000 with a standard deviation of PKR 5000. Test the hypothesis that the mean salary for associate professors in private institutions is PKR 1500 higher than for those in other institutions. Use a 0.01 level of significance.

Definition Definition Middle value of a data set. The median divides a data set into two halves, and it also called the 50th percentile. The median is much less affected by outliers and skewed data than the mean. If the number of elements in a dataset is odd, then the middlemost element of the data arranged in ascending or descending order is the median. If the number of elements in the dataset is even, the average of the two central elements of the arranged data is the median of the set. For example, if a dataset has five items—12, 13, 21, 27, 31—the median is the third item in ascending order, or 21. If a dataset has six items—12, 13, 21, 27, 31, 33—the median is the average of the third (21) and fourth (27) items. It is calculated as follows: (21 + 27) / 2 = 24.

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