Mathematics, 18.06.2020 20:57 breanastone15
Information from a sample of 157 restaurant bills collected at the First Crush bistro is available in RestaurantTips. Two intervals are given below for the average tip left at a restaurant; one is a 90% confidence interval and one is a 99% confidence interval Interval A: 3.55 to 4.15 Interval B: 3.35 to 4.35
(a) which one is the 90% confidence interval? | Interv.. which one is the 99% confidence interval?
(b) One waitress generally waits on 20 tables in an average shift. Give a range for her expected daily tip revenue, using both 90% and 99% confidence intervals. Round your answers to the nearest integer.
Confidence level Confidence interval
90% 0.6 to 7.7
99% -1 to 7.7
Answers: 3
Mathematics, 21.06.2019 17:00
An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?
Answers: 3
Mathematics, 21.06.2019 19:30
Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 2
Mathematics, 21.06.2019 21:30
Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50
Answers: 3
Information from a sample of 157 restaurant bills collected at the First Crush bistro is available i...
Geography, 25.07.2019 03:20
Geography, 25.07.2019 03:20