Mathematics, 26.06.2020 20:01, irabrooks14
The manager of a local fast-food restaurant is interested in improving the service provided to customers who use the restaurant’s drive-up window. As a first step in this process, the manager asks his assistant to record the time it takes to serve a large number of customers at the final window in the facility’s drive-up system. The results are in the file P07_08.xlsx, which consists of nearly 1200 service times. For this problem, you can assume that the population is the data in this file. Use Excel to generate a simple random sample of size 30 from the data. Round your answers to two decimal places, if necessary. a. Calculate a point estimate of the population mean from the sample selected above. What is the sampling error, that is, by how much does the sample mean differ from the population mean? b. Calculate a good approximation for the standard error of the mean. c. If you wanted to halve the standard error from part c, what approximate sample size would you need? Why is this only approximate? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank
Answers: 2
Mathematics, 21.06.2019 14:00, riptaylorsreputation
7x+8y=-18, 4x-9y=-3 solve the system of equations
Answers: 3
Mathematics, 21.06.2019 16:20, HAMILTRASHANDIKNOWIT
Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?
Answers: 1
Mathematics, 21.06.2019 21:00, hastephens03
Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?
Answers: 3
Mathematics, 22.06.2019 01:30, maymuu4life
As a self-employed seamstress, you know that it takes 7 yards of material to make 3 jackets. you bought 15 yards of material to make 7 jackets. did you buy enough material? if not, how much were you over or under?
Answers: 1
The manager of a local fast-food restaurant is interested in improving the service provided to custo...
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