he quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The standard deviation is 84 hours. A random sample of 49 light bulbs indicated a sample mean life of 270 hours. Do you think that the manufacturer has the right to state that the lightbulbs have a mean life of 320 hours? Explain. Based on the sample data, the manufacturer _____ the right to state that the lightbulbs have a mean life of 320 hours. A mean of 320 hours is less than 2 more than 4 standard errors ______ the sample mean, so it is ________ likely highly unlikely that the lightbulbs have a mean life of 320 hours.
he quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The standard deviation is 84 hours. A random sample of 49 light bulbs indicated a sample mean life of 270 hours. Do you think that the manufacturer has the right to state that the lightbulbs have a mean life of 320 hours? Explain. Based on the sample data, the manufacturer _____ the right to state that the lightbulbs have a mean life of 320 hours. A mean of 320 hours is less than 2 more than 4 standard errors ______ the sample mean, so it is ________ likely highly unlikely that the lightbulbs have a mean life of 320 hours.
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
Related questions
Question
The quality control manager at a light bulb factory needs to estimate the
Do you think that the manufacturer has the right to state that the lightbulbs have a mean life of
320
hours? Explain.Based on the sample data, the manufacturer _____ the right to state that the lightbulbs have a mean life of 320 hours. A mean of
320 hours is less than 2 more than 4 standard errors ______ the sample mean, so it is ________ likely highly unlikely that the lightbulbs have a mean life of 320 hours.
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