Multiple Choice
Suppose the life of a particular brand of calculator battery is approximately normally distributed with a mean of 75 hours and a standard deviation of 10 hours. What is the probability that 16 randomly sampled batteries from the population will have a sample mean life of between 70 and 80 hours?
A) 0.9444
B) 0.5121
C) 0.7124
D) 0.1512
Correct Answer:
Verified
Correct Answer:
Verified
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