Asimple random sample of 50 stainless steel metal screws is obtained. the screws have a mean length of 0.73 inches. assume the population standard deviation is 0.012 inches and the confidence level is α = 0.05. find the p-value you would use to test the claim that the screws have a mean length equal to 0.75 inches as indicated on the package label. 0.9999 0.0002 1.9998 0.0001

Step-by-step explanation:

A simple random sample of 50(n) stainless steel metal screws is obtained. The screws have a mean length of 0.73(mu) inches. Assume the population standard deviation is 0.012(sigma) inches and the confidence level is α = 0.05.

Set up hypotheses as:

(two tailed test at 5% sign. level)

Mean difference =

Std error of sample =

Test statistic = Mean diff/std error

=

Since population std dev is known and also sample size >30 z test can be used.

p value <0.0001

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

the k side

step-by-step explanation:

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