In a survey, 24 people were asked how much they spent on their child's last birthday gift. The results wereroughly bell-shaped with a mean of $38 and standard deviation of $12. Construct a confidence interval at a80% confidence level.Give your answers to one decimal place.土 An engineer wishes to determine the width of a particular electronic component. If she knows that thestandard deviation is 2.3 mm, how many of these components should she consider to be 90% sure of knowingthe mean will be within ±0.1 mm?O143286975722338

Name: In a survey, 24 people were asked how much they spent on their child'
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Description: In a survey, 24 people were asked how much they spent on their child's last birthday gift. The results wereroughly bell-shaped with a mean of $38 and standard deviation of $12. Construct a confidence interval at a80% confidence level.Give your answe

Solution: Note: Hello! As you have posted 2 different questions, we are answering the first question. In case you require the unanswered question also, kindly re-post them as separate question. Let X be the amount spent on the child’s last birthday gift. From the given information, x-bar=$38, s=$12 and n=24.The confidence level is 0.80. Then, a 80% confidence interval at 80% confidence level is Thus, a 80% confidence interval at 80% confidence level is 38±3.2.

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In a survey, 24 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 $12. Construct a confidence interval at a 80% confidence level. Give your answers to one decimal place. 土

In a survey, 24 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 $12. Construct a confidence interval at a 80% confidence level. Give your answers to one decimal place. 土

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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