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A random sample of birth weights of male elephants is taken. a. Make a stem plot of the data (supplied below and in an Excel

A random sample of birth weights of male elephants is taken.

a. Make a stem plot of the data (supplied below and in an Excel file).

b. Find a 98% confidence interval for the mean birth weight of captive male elephants.

Weights in kg.

127,130,130,130,130,131,131,136,136,138,138,139,140,142,142,142,147,151,154,158,172,174,175

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