Question

An article in the journal Materials Engineering (1989, Vol. II, No. 4, pp. 275–281) describes the results of tensile adhesion tests on 22 U-700 alloy specimens. The load at specimen failure was measured over 22 data points and the findings were: The sample mean is x? = 13.71, and the sample standard deviation is s = 3.55. find a 95% CI on ?.

          An article in the journal Materials Engineering (1989, Vol. II, No. 4, pp. 275–281) describes
the results of tensile adhesion tests on 22 U-700 alloy specimens. The load at specimen failure

was measured over 22 data points and the findings were:

The sample mean is x? = 13.71, and the sample standard deviation is s = 3.55.

find a 95% CI on ?.

An article in the journal Materials Engineering (1989, Vol. II, No. 4, pp. 275–281) describes
the results of tensile adhesion tests on 22 U-700 alloy specimens. The load at specimen failure

was measured over 22 data points and the findings were:

The sample mean is x? = 13.71, and the sample standard deviation is s = 3.55.

find a 95% CI on ?.

Added by Daniela C.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Hoan Nguyen

01/12/2024

Step 1

We are given the sample mean ($\bar{x}$) and the sample standard deviation (s). $\bar{x} = 13.71$ $s = 3.55$ Show more…

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An article in the journal Materials Engineering (1989, Vol. 11, No. 4, pp. 275-281) describes the results of tensile adhesion tests on 22 U-700 alloy specimens. The load at specimen failure was measured over 22 data points, and the findings were as follows: The sample mean is 13.71, and the sample standard deviation is 3.55. Find the 95% confidence interval.