Question

In: Statistics and Probability

A survey of several 8 to 10 year olds recorded the following amounts spent on a...

A survey of several 8 to 10 year olds recorded the following amounts spent on a trip to the mall:

$11.83,$24.11,$19.93,$15.34

Construct the 99% confidence interval for the average amount spent by 8 to 10 year olds on a trip to the mall. Assume the population is approximately normal.

Solutions

Expert Solution

n = Number of Data Values = 4

x̄ = Sample Mean = 17.80

s2 = Sample Variance = 28.68

s = Sample Standard Deviation = 5.35

99% confidence interval

orchestra answered 2 years ago
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