According to records, the amount of precipitation in a certain city on a November day has a mean of 0.10 inches, with a

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According to records, the amount of precipitation in a certain
city on a November day has a mean of 0.10 inches, with a
standard deviation of 0.07inches. What is the probability that the
mean daily precipitation will be 0.09 inches or more for
a random sample of 40 November days (taken over many
years)? Carry your intermediate computations to at least four
decimal places. Round your answer to at least three decimal
places.
Suppose that pulse rates among healthy adults are normally
distributed with a mean of 81beats/minuteand a standard
deviation of 10beats/minute. What proportion of healthy
adults have pulse rates that are at most 75
beats/minute? Round your answer to at least four decimal
places.