Kizspy | Question: 35
(Choose 1 answer)
Car batteries produced by company A have a mean life of 3.5 years with a standard deviation of 0.4 years. A similar battery produced by company B has a mean life of 3.3 years and a standard deviation of 0.3 years.What is the probability that a random sample of 25 batteries from company A will have a mean life of at least 0.4 years more than the mean life of a sample of 36 batteries from company B? Assume that both populations are normally distributed.
Let P(Z < -2.12) = 0.0170, P(Z < 2.12) = 0.9830, P(Z< -4) = 0.
A. 1
B. 0.0170
C. 0
D. 0.9830
E. None of the other choices is correct
