Question

In: Statistics and Probability

A company of cables claims that a cable can stand an overload for 12 minutes before...

A company of cables claims that a cable can stand an overload for 12 minutes before it blows. We want to test that by overloading 25cables with the same load. The average time the cables stand was 9.5minutes with a standard deviation of 2.5 minutes. Assume normality, do you tent to support of refute the claim?

Solutions

Expert Solution

2nd image is to see the critical value for given degrees of freedom.

Conclusion

Here we can't support to the claim.

orchestra answered 2 years ago
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