Solve the Problem. -Suppose That Replacement Times for Washing Machines Are Normally Distributed
Multiple Choice
Solve the problem.
-Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation of 1.1 years. Find the probability that 70 randomly selected washing machines will have a mean replacement time less than 9.1 years.
A) 0.0714
B) 0.0643
C) 0.4357
D) 0.4286
Correct Answer:
Verified
Correct Answer:
Verified
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