**Please Help with BOTH 1) 2) A CI is desired for the true average stray-load loss…**

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## Question “Please Help with BOTH 1) 2) A CI is desired for the true average stray-load loss…”

Please Help with BOTH

1)

2)

## Answer

1) a) The critical value at 95% confidence level is z _{0.25} = 1.96

The confidence interval of 95% is

b) The confidence interval of 95% is

c) The critical value at 99% confidence level is z _{0.05} = 2.58

The confidence interval of 99% is

d) The critical value at 82% confidence level is z _{0,09} = 1.34

The confidence interval of 82% is

e) The critical value at 99% confidence level is z _{0.05} = 2.58

Margin of error = 1/2

2)a) The critical value at 95% confidence level is z _{0.25} = 1.96

The confidence interval of 95% is

b) The critical value at 98% confidence level is z _{0,01} = 2.33

The confidence interval of 98% is

c) Margin error = 0.47/2

d) Margin error = 0.22

## Conclusion

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