Suppose a geyser has a mean time between eruptions of 91 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 20 minutes.

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Q: he length of human pregnancies is approximately normal with mean μ = 266 days and standard deviation…

A: The given mean is 266 days and standard deviation is 16 days.

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Q: part c thank you!

A: Provided information is, Length of the pregnancies of a certain animal are approximately normally…