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You are conducting a survey of the total credit hours students take each semester at Surry Community College. Historically the population standard deviation is known to be o = 4.7 semester hours. You have spoken with 53 students so far. How many more students should be included in the sample to be 99% sure the sample mean is within one semester hour of the population mean for all students at this college? (Hint: the margin of error is the amount added or subtracted from the mean.)

You are conducting a survey of the total credit hours students take each semester at Surry Community College. Historically the population standard deviation is known to be o = 4.7 semester hours. You have spoken with 53 students so far. How many more students should be included in the sample to be 99% sure the sample mean is within one semester hour of the population mean for all students at this college? (Hint: the margin of error is the amount added or subtracted from the mean.)

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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TextEdit File Edit Format View Window Help A Confidence Intervals Assignment (2).rtf v Helvetica C Regular 1.0 :E 3. You are conducting a survey of the total credit hours students take each semester at Surry Community College. Historically the population standard deviation is known to be o = 4.7 semester hours. You have spoken with 53 students so far. How many more students should be included in the sample to be 99% sure the sample mean is within one semester hour of the population mean for all students at this college? (Hint: the margin of error is the amount added or subtracted from the mean.) 4. According to an NDP Group report, the mean number of meals prepared and eaten at home is 700 per year. Suppose that a random sample of 36 households showed a sample mean number of meals prepared and eaten at home was 690. Assume o = 40. a. Assuming your data is approximately normally distributed, calculate a 99% confidence interval for the average mean of meals prepared and eaten at home. b. Express your conclusion using a complete sentence or sentences. APR W 25 MacBook Air
Transcribed Image Text:TextEdit File Edit Format View Window Help A Confidence Intervals Assignment (2).rtf v Helvetica C Regular 1.0 :E 3. You are conducting a survey of the total credit hours students take each semester at Surry Community College. Historically the population standard deviation is known to be o = 4.7 semester hours. You have spoken with 53 students so far. How many more students should be included in the sample to be 99% sure the sample mean is within one semester hour of the population mean for all students at this college? (Hint: the margin of error is the amount added or subtracted from the mean.) 4. According to an NDP Group report, the mean number of meals prepared and eaten at home is 700 per year. Suppose that a random sample of 36 households showed a sample mean number of meals prepared and eaten at home was 690. Assume o = 40. a. Assuming your data is approximately normally distributed, calculate a 99% confidence interval for the average mean of meals prepared and eaten at home. b. Express your conclusion using a complete sentence or sentences. APR W 25 MacBook Air
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