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In a survey, 253 people were asked how much they spent on their child's last birthday gift. The results were roughly bel

Posted: Wed May 11, 2022 4:18 pm
by answerhappygod
In a survey, 253 people were asked how much they spent on their
child's last birthday gift. The results were roughly bell-shaped
with a mean of $43.57 and standard deviation of $6.02. Estimate how
much a typical parent would spend on their child's birthday gift
(use a z-interval at a 80% confidence level). Give your
answers to 2 decimal places.

Express your answer in the format
of ¯xx¯ ±± E.