Mathematics, 31.03.2020 00:15, milkshakegrande101
A battery manufacturer advertises that the mean reserve capacity of a certain battery is 1500 hours. You suspect that the batteriesâ reserve time is less than the advertised value. To test this claim, you randomly select a sample of 20 batteries and find the mean reserve capacity to be 1320 hours. Assume that the population standard deviation is 320 hours. Do you have enough evidence to support the manufacturerâs claim? What assumption is necessary for this test to be valid? None. The Central Limit Theorem makes any assumptions unnecessary. The population of all the batteriesâ reserve time is normally distributed because of the small sample size. The population variance must equal the population mean.
Answers: 2
Mathematics, 21.06.2019 21:30, kassandramarie16
Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t â 2654, where t is the number of tickets sold. what does the number 8 tell you?
Answers: 1
Mathematics, 21.06.2019 21:50, byrdkellykellybyrd
What is the rate for one gallon of gasoline
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Mathematics, 21.06.2019 22:50, kristofwr3444
Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 â 28x + 585
Answers: 1
A battery manufacturer advertises that the mean reserve capacity of a certain battery is 1500 hours....
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