Homework10: Problem 3 Previous Problem List Next (1 point) For each situation, s
ID: 3340223 • Letter: H
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Homework10: Problem 3 Previous Problem List Next (1 point) For each situation, state the null and alternative hypotheses: (Type "mu" for the symbol , eg. mu > 1 for the mean is greater than 1,mu = 1 for the mean is greater than or equal to 1 . Please do not include units such as "mm" or·S" in your answer.) (a) The manufacturer claims the diameter of a spindle in a small motor is supposed to be 3.6 millimeters (mm) with a standard deviation of 0.15 mm·If the spindle is either too small or too large, the motor will not work properly. The manufacturer measures the diameter in a sample of 17 spindles to determine whether the mean diameter has moved away from the required measurement. Suppose the sample has an average diameter of 3.48 mm Ho: (b) Harry thinks that prices in Caldwell are lower than the rest of the country. He reads that the nationwide average price of a certain brand of laundry detergent is $20.45 with standard deviation $2.50. He takes a sample from 4 local Caldwell stores and finds the average price for this same brand of detergent is $21.71. Ho Ha Note: You can earn partial credit on this problem. Preview My Answers Submit AnswersExplanation / Answer
a) Ho: Mu=3.6
H1:Mu is not equal to 3.6
b)
H0: Mu is equal to 20.45
H1: Mu ilesser than 20.45
ie..H1: Mu<20.45
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