Mathematics, 02.04.2020 02:38, girly37
An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75. A sample of 30 days reveals a daily average revenue of $625.
If you were to test the null hypothesis that the daily average revenue was $675, which test would you use?
a. Z-test of a population mean
b. Z-test of a population proportion
c. t-test of population mean
d. t-test of a population proportion
Answers: 2
Mathematics, 21.06.2019 15:50, annadson4589
Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.
Answers: 2
Mathematics, 21.06.2019 19:50, twitter505567
How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?
Answers: 3
Mathematics, 21.06.2019 20:20, jackiediaz
One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%
Answers: 1
An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims tha...
Mathematics, 19.03.2021 03:30