An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with a standard deviation of 260 hours. If a random sample of 110 bulbs is chosen, what is the probability that the sample mean will be: a. greater than 1 160 hours? b. less than 1 260 hours? c. between 1 160 and 1 260 hours
An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with a standard deviation of 260 hours. If a random sample of 110 bulbs is chosen, what is the probability that the sample mean will be: a. greater than 1 160 hours? b. less than 1 260 hours? c. between 1 160 and 1 260 hours
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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An electrical company claims that the average life of the bulbs it manufactures is 1 300 hours with a standard deviation
of 260 hours. If a random sample of 110 bulbs is chosen, what is the probability that the sample mean will be:
a. greater than 1 160 hours?
b. less than 1 260 hours?
c. between 1 160 and 1 260 hours
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