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Mathematics, 26.12.2019 01:31 celeste5364

Amanufacturer of carpentry screws claims that its production machine is very accurate and that the standard deviation of the length of all screws produced is .08 mm or less. a sample of 30 screws showed a standard deviation of .10. the test statistic to test the manufacturer's claim is

a. 45.31
b. 23.2
c. 18.56
d. 19.2

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