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The management of White Industries is considering a new method of assembling its golf cart. The present method requires 42.3 minutes, on the average, to assemble a cart. The mean assembly time for a random sample of 24 carts, using the new method, was 40.6 minutes, and the standard deviation of the sample was 2.7 minutes. Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?

 

a. What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)

  Reject H0 : μ ≥ 42.3 when the test statistic is (Click to select)equal togreaterthanlessthan  .

 

b. Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round your answer to 3 decimal places.)

need help with this answer

  Value of the test statistic     

 

c. What is your decision regarding H0?

Fail to reject

Reject

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