In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $37.4 and standard deviation of $17.9. Estimate how much a typical parent would spend on their child's birthday gift (use a 95% confidence level). Give your answers to 3 decimal places. Express your answer in the format of + E.

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In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $37.4 and a standard deviation of $17.9. Estimate how much a typical parent would spend on their child’s birthday gift, using a 95% confidence level. Give your answers to 3 decimal places.

Express your answer in the format of \( \bar{x} \pm E \).

[Input Box] $ \pm [Input Box] $
Transcribed Image Text:In a survey, 23 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of $37.4 and a standard deviation of $17.9. Estimate how much a typical parent would spend on their child’s birthday gift, using a 95% confidence level. Give your answers to 3 decimal places. Express your answer in the format of \( \bar{x} \pm E \). [Input Box] $ \pm [Input Box] $
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Given,sample size(n)=23sample mean(x¯)=37.4standard deviation(s)=17.9degrees of freedom (df)=n-1=23-1=22α=1-0.95=0.05α2=0.025t0.025 (22)=2.074   (from t-table)

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