A carpenter is making doors that are 2058 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 31doors is taken, and it is found that they have a mean of 2047 millimeters. Assume a population standard deviation of 21. Is there evidence at the 0.05 level that the doors are either too long or too short? Step 1 of 3: State the null and alternative hypotheses.
A carpenter is making doors that are 2058 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 31doors is taken, and it is found that they have a mean of 2047 millimeters. Assume a population standard deviation of 21. Is there evidence at the 0.05 level that the doors are either too long or too short? Step 1 of 3: State the null and alternative hypotheses.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A carpenter is making doors that are 2058 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 31doors is taken, and it is found that they have a mean of 2047 millimeters. Assume a population standard deviation of 21. Is there evidence at the 0.05 level that the doors are either too long or too short?
Step 1 of 3:
State the null and alternative hypotheses.
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