Ever since an automobile started to have a mechanical problem, every time it has burned a gallon of gasoline, it has traveled only half as far as it did for the last gallon of gasoline it burned. if it traveled 40 miles for the first gallon of gasoline, it burned since the problem started, and if it has burned a total of 5 gallons of gasoline since the problem started, how many miles per gallon has the automobile averaged since the problem started?

a)
15 miles per gallon

b)
15.5 miles per gallon

c)
16 miles per gallon

d)
16.5 miles per gallon

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95