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 19:00
Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 8 = -6x a. –7.12, 1.12 b. 7.12, –1.12 c. 7.12, 1.12 d. –7.12, –1.12
Answers: 2
Mathematics, 21.06.2019 19:30
Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?
Answers: 2
An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims tha...
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