Week_4_Confidence_Interval_Calculator_11202019.xlsx

Sheet1

Confidence Interval

Confidence Interval for µ Confidence Interval for p

Confidence Level (decimal) Confidence Level

n n

Mean Number of Successes

StDev NOTE: OR

Use t or z? If sample standard deviation is known, use t. Sample Proportion

If population standard deviation is known, use z.

SE ERROR:#DIV/0! (Stdev / sqrt(n)) Sample Proportion ERROR:#DIV/0!

N/A (critical value of z) SE ERROR:#DIV/0!

Margin of Error ERROR:#DIV/0! z 0.000000

Lower Limit ERROR:#DIV/0! Margin of Error ERROR:#DIV/0!

Upper Limit ERROR:#DIV/0! Lower Limit ERROR:#DIV/0!

Upper Limit ERROR:#DIV/0!

Minimum Sample Size μ Minimum Sample Size p

Confidence Level Confidence Level

StDev Proportion

Error Error

z-Value N/A z-Value N/A

Minimum Sample Size ERROR:#VALUE! Minimum Sample Size ERROR:#VALUE!

t Do not

z change

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