Archeologists have studied sizes of Egyptian skulls in an attempt to determine whether breeding occurred between different cultures. Listed below are the widths(mm) of skulls from 150 A.D. Construct a

95%

confidence interval estimate of the mean skull width.

127.8

138.4

126.2

132.3

142.7

134.8

139.4

129.3

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Part 1

enter your response here mm<

mm

(Round to two decimal places asneeded.)