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% ) 8.2.23-т Question Help A manufacturing company produces electric insulators. You define the variable of interest as the strength of the insulators. If the insulators break when in use, a she circuit is likely. To test the strength of the insulators, you carry out destructive testing to determine how much force is required to break the insulators. You measure force by observing how many pounds are applied to the insulator before it breaks The data shown below represent the amount of orce required to break a sample 30 insulators Complete parts a through c below 10 27 12 27 15 32 25 29 32 24 24 27 c 24 37 20 56 34 23 a. Construct a 95% confidence interval for the population mean force spRound to two decimal places as needed)
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Answer #1

Answer:

95% CI =   18.66 < µ < 27.94

CI = \bar x \pm t* \frac {s}{\sqrt{n}}

Confidence Interval Estimate for the Mean

Data

Sample Standard Deviation

12.4268

Sample Mean

23.3

Sample Size

30

Confidence Level

95%

Intermediate Calculations

Standard Error of the Mean

2.2688

Degrees of Freedom

29

t Value

2.0452

Interval Half Width

4.6402

Confidence Interval

Interval Lower Limit

18.6598

Interval Upper Limit

27.9402

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% ) 8.2.23-т Question Help A manufacturing company produces electric insulators. You define the variable of...
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