4. Manufacturer A's television picture tubes have a mean lifespan of 7.27 years and a standard deviation of 0.67 years; while those of manufacturer B have a mean duration of 6.29 years and a standard deviation of 0.33 years. What is the probability that a random sample of 40 kinescopes from manufacturer A will have a mean lifespan that is 1 year longer than the mean lifespan in a sample of 43 kinescopes from manufacturer B? Round your answer to four decimal places after the period. Select one: a. The probability is 0.4325 b. None of the above c. The probability is 0.4412 d. The probability is 0.4455
4. Manufacturer A's television picture tubes have a mean lifespan of 7.27 years and a standard deviation of 0.67 years; while those of manufacturer B have a mean duration of 6.29 years and a standard deviation of 0.33 years. What is the probability that a random sample of 40 kinescopes from manufacturer A will have a mean lifespan that is 1 year longer than the mean lifespan in a sample of 43 kinescopes from manufacturer B? Round your answer to four decimal places after the period. Select one: a. The probability is 0.4325 b. None of the above c. The probability is 0.4412 d. The probability is 0.4455
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 13PPS
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4. Manufacturer A's television picture tubes have a mean lifespan of 7.27 years and a standard deviation of 0.67 years; while those of manufacturer B have a mean duration of 6.29 years and a standard deviation of 0.33 years. What is the probability that a random sample of 40 kinescopes from manufacturer A will have a mean lifespan that is 1 year longer than the mean lifespan in a sample of 43 kinescopes from manufacturer B?
Round your answer to four decimal places after the period.
Select one:
a. The probability is 0.4325
b. None of the above
c. The probability is 0.4412
d. The probability is 0.4455
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