In a study of the accuracy of fast food drive-through orders, Restaurant A had 222 accurate orders and 54 that were not accurate. a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.175

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In a study of the accuracy of fast food drive-through orders, Restaurant A had 222 accurate orders and 54 that were not accurate.

a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate.

b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.175 < p < 0.257. What do you conclude?

### Instructions:

a. Construct a 90% confidence interval. Express the percentages in decimal form.

\[ \_\_ < p < \_\_ \]

(Round to three decimal places as needed.)
Transcribed Image Text:In a study of the accuracy of fast food drive-through orders, Restaurant A had 222 accurate orders and 54 that were not accurate. a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate. b. Compare the results from part (a) to this 90% confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.175 < p < 0.257. What do you conclude? ### Instructions: a. Construct a 90% confidence interval. Express the percentages in decimal form. \[ \_\_ < p < \_\_ \] (Round to three decimal places as needed.)
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