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What conditions must be satisfied to compute a confidence interval for the mean?

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the following data represent the diameter in cm. of a random sample of 12. 

152

162

190

130

147

101

173

147

159

113

181

109

Apr 13th, 2015

The data must come from a normally distributed population.

95%CI= (129.5, 164.5)

Apr 13th, 2015

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Apr 13th, 2015
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Apr 13th, 2015
Feb 22nd, 2017
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