The length of gestation for hippopotami is approximately Normal, with a mean of 270 days and a

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The length of gestation for hippopotami is approximately Normal, with a mean of 270 days and a standard deviation of 7 days.

a. What percentage of hippos have a gestation period less than 260 days?

b. Complete this sentence: Only 6% of hippos will have a gestational period longer than ___ days.

c. In 2017, Fiona the Hippo was born at the Cincinnati Zoo, 6 weeks premature. This means her gestational period was only about 228 days. What percentage of hippos have a gestational period of 228 days or less?

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Introductory Statistics Exploring The World Through Data

ISBN: 9780135163146

3rd Edition

Authors: Robert Gould, Rebecca Wong, Colleen N. Ryan

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