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Hypothesis testing

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rClanagan
 
Reply Sun 14 Apr, 2019 11:37 am
In a random sample of 20 people, the mean tip that they said they would leave after a
$30 meal was X bar = $3.75 and the standard deviation was s = $0.50. Assuming that
tips are normally distributed, construct a 99% confidence interval on the population
mean tip ยต.

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