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In a certain high school, it is believed that students having a weight of more than 125 lbs is considered overweight. Past data showed that the weights (in lbs) of high school students from this school is normally distributed with a standard deviation of 12.3 lbs. The principal of this high school would like to check if the current students are overweight. He took a random sample of 25 students and found out that the average weight is 107.6 lbs. The principal would like to estimate the true mean weight of the high school students in their school using a 90% confidence interval. A. What is the best point estimate for the true mean weight of the students in that high school? [Select] B. What is the margin of error if we are to construct a 90% confidence interval estimate for the true mean weight of the students in that high school? [Select] [Select] of the students in that high school? C. Construct a 90% confidence interval esti [Select] The error will not exceed 4.0467 The error will not exceed 4.2088 The error will not exceed 4.8216 The error will not exceed 3.1488 D. Should the principal conclude that their current students are overweight? [Select] fd. F. If the principal wants to be 80%

In a certain high school, it is believed that students having a weight of more than 125 lbs is considered overweight. Past data showed that the weights (in lbs) of high school students from this school is normally distributed with a standard deviation of 12.3 lbs. The principal of this high school would like to check if the current students are overweight. He took a random sample of 25 students and found out that the average weight is 107.6 lbs. The principal would like to estimate the true mean weight of the high school students in their school using a 90% confidence interval. A. What is the best point estimate for the true mean weight of the students in that high school? [Select] B. What is the margin of error if we are to construct a 90% confidence interval estimate for the true mean weight of the students in that high school? [Select] [Select] of the students in that high school? C. Construct a 90% confidence interval esti [Select] The error will not exceed 4.0467 The error will not exceed 4.2088 The error will not exceed 4.8216 The error will not exceed 3.1488 D. Should the principal conclude that their current students are overweight? [Select] fd. F. If the principal wants to be 80%

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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In a certain high school, it is believed that students having a weight of more than 125 lbs is considered overweight. Past data showed that the weights (in lbs) of high school students from this school is normally distributed with a standard deviation of 12.3 lbs. The principal of this high school would like to check if the current students are overweight. He took a random sample of 25 students and found out that the average weight is 107.6 lbs. The principal would like to estimate the true mean weight of the high school students in their school using a 90% confidence interval. A. What is the best point estimate for the true mean weight of the students in that high school? [Select] B. What is the margin of error if we are to construct a 90% confidence interval estimate for the true mean weight of the students in that high school? [Select] [Select] C. Construct a 90% confidence interval esti The error will not exceed 4.0467 of the students in that high school? The error will not exceed 4.2088 [Select] The error will not exceed 4.8216 The error will not exceed 3.1488 D. Should the principal conclude that their current students are overweight? [Select] E. If the principal wants to be 90% confident that the true mean weight of the high school students is within 3.5 lbs, what sample size is needed? [Select]
Transcribed Image Text:In a certain high school, it is believed that students having a weight of more than 125 lbs is considered overweight. Past data showed that the weights (in lbs) of high school students from this school is normally distributed with a standard deviation of 12.3 lbs. The principal of this high school would like to check if the current students are overweight. He took a random sample of 25 students and found out that the average weight is 107.6 lbs. The principal would like to estimate the true mean weight of the high school students in their school using a 90% confidence interval. A. What is the best point estimate for the true mean weight of the students in that high school? [Select] B. What is the margin of error if we are to construct a 90% confidence interval estimate for the true mean weight of the students in that high school? [Select] [Select] C. Construct a 90% confidence interval esti The error will not exceed 4.0467 of the students in that high school? The error will not exceed 4.2088 [Select] The error will not exceed 4.8216 The error will not exceed 3.1488 D. Should the principal conclude that their current students are overweight? [Select] E. If the principal wants to be 90% confident that the true mean weight of the high school students is within 3.5 lbs, what sample size is needed? [Select]
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