During the Last Energy Crisis,a Government Official Claimed That the Average

Essay

During the last energy crisis,a government official claimed that the average car owner refills the tank when there is more than 3 gallons left.To check the claim,10 cars were surveyed as they entered a gas station.The amount of gas remaining before refill was measured and recorded as follows (in gallons): 3,5,3,2,3,3,2,6,4,and 1.Assume that the amount of gas remaining in tanks is normally distributed with a standard deviation of 1 gallon.Compute the probability of a Type II error and the power of the test if the true average amount of gas remaining in tanks is 3.5 gallons anda= 0.10.