(Q1). The principal randomly selected six students to take an aptitude test in her school. Their scores were: 87 86 89 78 75 70 Assume that the population is normally distributed. a. What is the point estimate of the mean aptitude test score for this school? b. What is the margin of error when estimating the mean aptitude test score if using 95% confidence. c. Construct a 95% confidence interval estimate of the mean aptitude test score for this school.

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Q: Q1. a). A group of 20 candidates were selected from the two departments with the following marks…

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Q: 2. For the data in the table below, find the sum of the absolute deviations for the predicted values…

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Q: An auditor detects that a firm is regularly overstating the amounts of inventories because of delays…

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Q: The population standard deviation for the heights of dogs, in inches, in a city is 7.9 inches. If we…

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Q: Given the interval estimate for the mean (6.2, 17.6), the point estimate for the mean is

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Q: Which one of the following is the correct way to report the results of a t test? The mean math-test…

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Q: Given the matched-pairs below, compute the mean and standard deviation for X Y. X 14.1 13.6 15.8…

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Q: The director of a hospital wishes to estimate the mean number of people who are admitted to the…

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Q: .4, -0.2, 1.5, 1.8, and -0.7

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Q: Given the interval estimate for the mean (9.2, 13.4), the point estimate for the mean is _______ ,…

A: The given interval estimate for the mean is (9.2, 13.4).The margin of error is calculated below:

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.