In an Examination of Holiday Spending (Known to Be Normally

question 73

Multiple Choice

In an examination of holiday spending (known to be normally distributed) of a sample of 16 holiday shoppers at a local mall, an average of $54 was spent per hour of shopping. Based on the current sample, the standard deviation is equal to $21. Find a 90% confidence interval for the population mean level of spending per hour.

• A) [$44.83, $63.17]
• B) [$44.79, $63.20]
• C) [$45.36, $62.63]
• D) [$46.96, $61.04]

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