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A carpenter is making doors that are 2058.0 millimeters tall. If the doors are too long...

A carpenter is making doors that are 2058.0 millimeters tall. If the doors are too long they must be trimmed, and if they are too short they cannot be used. A sample of 34 doors is made, and it is found that they have a mean of 2043.0 millimeters. Assume the standard deviation is known to be 33.0. Is there evidence at the 0.1 level that the doors are too short and unusable?

Step 2 of 5:

Enter the value of the z test statistic. Round your answer to two decimal places.

i got -2.65 but i am not sure that is right

Math   Statistics-And-Probability   
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