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your answers to two decimal place Give your answer in notation: ± Write the confidence interval in interval notation (lower limit,upper limit) in the answerbox below. Then interpret your confidence interval in the context of this problem.

your answers to two decimal place Give your answer in notation: ± Write the confidence interval in interval notation (lower limit,upper limit) in the answerbox below. Then interpret your confidence interval in the context of this problem.

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 survey, 14 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $6. Construct a confidence interval at a 95% confidence level. Use the z* score for the appropriate confidence S level and SET √n Percentage Confidence z*-Value 80 1.28 90 1.645 95 1.96 98 2.33 99 2.58 Give your answers to two decimal places. Give your answer in notation: + Write the confidence interval in interval notation (lower limit,upper limit) in the answerbox below. Then interpret your confidence interval in the context of this problem. Note: The answer key for the margin of error goes out 14 decimal places. Chances are, the autograde feature will mark your answer wrong. I have to grade this question by hand. If your answer is correct, the points will be returned to your score.
Transcribed Image Text:In a survey, 14 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $38 and standard deviation of $6. Construct a confidence interval at a 95% confidence level. Use the z* score for the appropriate confidence S level and SET √n Percentage Confidence z*-Value 80 1.28 90 1.645 95 1.96 98 2.33 99 2.58 Give your answers to two decimal places. Give your answer in notation: + Write the confidence interval in interval notation (lower limit,upper limit) in the answerbox below. Then interpret your confidence interval in the context of this problem. Note: The answer key for the margin of error goes out 14 decimal places. Chances are, the autograde feature will mark your answer wrong. I have to grade this question by hand. If your answer is correct, the points will be returned to your score.
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