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How do you conduct a two-tail hypothesis test for the breaking strength of a certain typ of cable?

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PROBLEM # 3 A certain type of cable was advertised as having a breaking strength of 1000 pounds. A test of XX pieces of this cable was conducted and the mean breaking strength of this sample was XXX pounds with a sample standard deviation of XX pounds. Conduct a two-tail hypotheses test at alpha = .05 to determine if this sample data provides sufficient evidence to indicate that the cable is as strong as advertised.
I will provide specific values for the X's.

PROBLEM # 4 Conduct a 95% confidence interval on the sample data in Problem 3 above.

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This solution shows how to conduct a two tailed test for the significance of the mean of a population in an attached Word document.

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Problem 3. The given problem is to conduct a two-tailed test of the null hypothesis
against , where  denotes the mean breaking strength of the cable at 5% significance level ( = 0.05).

Given, sample size n = XX, sample mean and sample SD s = X (note that in the given problem it is specified as XX. To distinguish it from the sample size n, I have changed it to X)

The ...

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