A children’s clothing company sells hand-smocked dresses. The length of one particular size of dress is designed to be 39 inches. The company regularly tests the lengths of the garments to ensure quality control, and if the mean length is found to be significantly longer or shorter than 3939 inches, the machines must be adjusted. The most recent simple random sample of 18 dresses had a mean length of 34.24 inches with a standard deviation of 10.19 inches. Assume that the population distribution is approximately normal. Perform a hypothesis test on the accuracy of the machines at the 0.01 level of significance. Step 2 of 3:  Compute the value of the test statistic. Round your answer to three decimal places Step 3 of 3:  Draw a conclusion and interpret the decision

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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A children’s clothing company sells hand-smocked dresses. The length of one particular size of dress is designed to be 39 inches. The company regularly tests the lengths of the garments to ensure quality control, and if the mean length is found to be significantly longer or shorter than 3939 inches, the machines must be adjusted. The most recent simple random sample of 18 dresses had a mean length of 34.24 inches with a standard deviation of 10.19 inches. Assume that the population distribution is approximately normal. Perform a hypothesis test on the accuracy of the machines at the 0.01 level of significance.
Step 2 of 3: 
Compute the value of the test statistic. Round your answer to three decimal places
Step 3 of 3: 
Draw a conclusion and interpret the decision
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