Fast-Food Bills for Drive-Thru Customers A random sample of 40 cars in the drive-thru of a popular fast food restaurant revealed an average bill of $16.10 per car. The population standard deviation is $4.79. Estimate the mean bill
for all cars from the drive-thru with 91% confidence. Use a graphing calculator and round the answers to at least two
decimal places.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Need this at the city museum, child admission is 6 and adult admission is 9.20. on tuesday, 132 tickets were sold for a total sales of 961.60. how many adult tickets were sold that day?

Which statement is true about the discontinuities of the function f(x) = x-5/ 3x^2-17x-28