1.In a study of the accuracy of fast fooddrive-through orders, Restaurant A had 325 accurate orders and 59 that were not accurate.

a. Construct a 90% confidence interval estimate of the percentage of orders that are not accurate. Express the percentages in decimal form ......

b. Compare the results from part(a) to this 90% confidence interval for the percentage of orders that are not accurate at RestaurantB: 0.139

Choose the correct answer below.

A.

No conclusion can be made because not enough information is given about the confidence interval for Restaurant B.

B.

Since the upper confidence limit of the interval for Restaurant B is higher than both the lower and upper confidence limits of the interval for RestaurantA, this indicates that Restaurant B has a significantly higher percentage of orders that are not accurate.

C.

The lower confidence limit of the interval for Restaurant B is higher than the lower confidence limit of the interval for Restaurant A and the upper confidence limit of the interval for Restaurant B is also higher than the upper confidence limit of the interval for Restaurant A.Therefore, Restaurant B has a significantly higher percentage of orders that are not accurate.

D.

Since the two confidence intervalsoverlap, neither restaurant appears to have a significantly different percentage of orders that are not accurate.

2.A genetic experiment with peas resulted in one sample of offspring that consisted of 415 green peas and 163 yellow peas.

a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. Express the percentages in decimal form ....

(Round to three decimal places asneeded.)

b. It was expected that25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not25%, do the results contradictexpectations?

Given that the percentage of offspring yellow peas is not25%, do the results contradictexpectations?

No, the confidence interval includes0.25, so the true percentage could easily equal25%

Yes, the confidence interval does not include0.25, so the true percentage could not equal25%