Answer:
see explanation
Step-by-step explanation:
The = i
Hotel managers wish to learn the average length of stay of all visitors that are senior citizens. A statistician determines that
to calculate a 90% confidence level estimate of the average length of stay to within +/- 1.5 days, a total of 65 senior visitors’ check-in/check-out records will have to be examined. How many records should be looked at to obtain a 90% confidence level estimate to within +/- 0.5 days?
1 answer:
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Answer:
37
Step-by-step explanation:
the absolute value is always positive. imagine it as "how much away from zero"