Written assignment: excel formular practice using data sheet “new

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Based on what you’ve learned in Chapter 3,  calculate the following 10:

Sample size: conduct a COUNT via formula of the data in your spreadsheet

Sample Mean of Sales: use formula

Sample Standard Deviation of Sales: use formula

Confidence Level: 95% (use this number)

Standard Error: Sample STDEV divided by SQRT of sample size

Alpha: 5% (1 minus the confidence level, 95% in this case)

Degrees of Freedom: Sample size minus 1

t-Value: TINV(Alpha, Degrees of Freedom)

Half-Width: t Value *Standard Error of the Mean

Lower Limit Total Sales: Sample Mean – Interval Half Width

(or /and) Upper Limit Total Sales: Sample Mean + Interval Half Width

Please complete all calculations in the Excel file provided to you.