Jake keeps a log of the distance he covers, in miles, on each of his daily running workouts. Over the past twelve months, he has recorded a large number of workouts. Jake randomly selected 10 workouts from his log and found a mean distance of 4.81 miles with a standard deviation of 2.05 miles. Assuming all conditions for inference are met, which of the following gives a 90% confidence interval to estimate the mean number of miles he ran in the past twelve months? (A) 4.81 ± 1.645(0.648) (B) 4.81 ± 1.81(0.648) (C) 4.81 ± 1.81(2.05) (D) 4.81 1.83(0.648) ± (E) 4.81 ± 1.83(2.05)
Jake keeps a log of the distance he covers, in miles, on each of his daily running workouts. Over the past twelve months, he has recorded a large number of workouts. Jake randomly selected 10 workouts from his log and found a mean distance of 4.81 miles with a standard deviation of 2.05 miles. Assuming all conditions for inference are met, which of the following gives a 90% confidence interval to estimate the mean number of miles he ran in the past twelve months? (A) 4.81 ± 1.645(0.648) (B) 4.81 ± 1.81(0.648) (C) 4.81 ± 1.81(2.05) (D) 4.81 1.83(0.648) ± (E) 4.81 ± 1.83(2.05)
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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why the correct answer is letter d?
Transcribed Image Text:Jake keeps a log of the distance he covers, in miles, on each of his daily running workouts. Over the
past twelve months, he has recorded a large number of workouts. Jake randomly selected 10
workouts from his log and found a mean distance of 4.81 miles with a standard deviation of 2.05
miles. Assuming all conditions for inference are met, which of the following gives a 90% confidence
interval to estimate the mean number of miles he ran in the past twelve months?
(A) 4.81 ± 1.645(0.648)
(B) 4.81 ± 1.81(0.648)
(C) 4.81 ± 1.81(2.05)
(D) 4.81 1.83(0.648)
±
(E) 4.81 ± 1.83(2.05)
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