The average number of milligrams (mg) of sodium in a certain brand of low-salt microwave frozen dinners is 660 mg, and the standard deviation is 35 mg. Assume the variable is normally distributed. If a sample of 25 dinners is selected, ind the probability that the mean of the sample will be larger than 670 mg.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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The average number of milligrams (mg) of sodium in a certain brand of low-salt
microwave frozen dinners is 660 mg, and the standard deviation is 35 mg.
Assume the variable is normally distributed. If a sample of 25 dinners is selected,
find the probability that the mean of the sample will be larger than 670 mg.
92.36%
61.41%
38.59%
7.64
Transcribed Image Text:The average number of milligrams (mg) of sodium in a certain brand of low-salt microwave frozen dinners is 660 mg, and the standard deviation is 35 mg. Assume the variable is normally distributed. If a sample of 25 dinners is selected, find the probability that the mean of the sample will be larger than 670 mg. 92.36% 61.41% 38.59% 7.64
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