Here are the tips of 25 randomly selected patrons, measured in percent of total bill.20.8 18.7 19.9 20.6 21.9 23.4 22.8 24.9 22.2 20.324.9 22.3 27.0 20.4 22.2 24.0 21.1 22.1 22.0 22.719.1 20.6 22.3 22.0 29.4 the standard deviation of tips is known to be 2.5.a) what is the 94% confidence interval for the mean tip of patrons if the distribution of tips is approximately normal? b) what is the 98% confidence interval for the mean tip of patrons if the distribution of tips is unknown?

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

explanation:

step-by-step explanation: