Complete Quiz #7
Question Description
1. Explain in your own words why, for a continuous random variable, P(X = k) = 0 for any number k.
2. Suppose that a certain battery is advertised to last for 5 years. Suppose further that the actual life time of the battery is approximately normally distributed with a mean of 5.4 years and a standard deviation of 0.3 years. Answer each of the following:
a) Explain how the standard normal curve, Z, relates to computing the probability of a randomly selected battery lasting less than the advertised amount of time.
b) Compute and interpret the probability of a randomly selected battery lasting less than the advertised amount of time.
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