Help please. Use the data set to answer the questions utilizing the seven-step p

Question

Help please.

Use the data set to answer the questions utilizing the seven-step process.

Construct appropriate confidence intervals for each problem. (5 points)

Data Set Pocket Waist Size Change Wt Age (Yrs) Shoe Size 180 140 130 125 155 129 173 102 180 130 125 145 235 138 165 140 240 163 195 122 115 210 108 126 215 125 105 126 140 145 Student Ht 018 125 39 02 09 69 31 011 07 08 06 08 06 08 09 08 25 31 32 34 25 214 138 067 285 050 032 118 060 050 022 095 109 014 005 170 036 050 075 175 041 036 235 130 014 050 07 08 26 32 28 13 08 09 07 09 07 15 24 78 28 24 32 20 21 09 26 25 30 23 23 07 08 23 69 24 26 27 28 29 08 24 69 09 08 08 67

Explanation / Answer

descriptive

z(a/2)=z(0.05/2) = 1.96

CI = mean +- z(a/2)*sd/sqrt(n)

i am 95% confident that estimated popn mean lies in the obtained interval

excel sheet: repalce " =" by "="

ht wt age shoe size waist size pocket change excel function mean 66.733 150.900 33.033 8.300 29.833 90.900 AVERAGE sd 5.771 37.491 8.576 1.512 4.639 73.401 STDEV n 30 30 30 30 30 30 COUNT

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