Repeat 19.25 but assume that the population mean and population standard deviati

Question

Repeat 19.25 but assume that the population mean and population standard deviation are as given below:

Descriptive Statistics:

Strength Variable N Mean StDev Strength 75 15.847 1.332 Repeat 19.25 but assume that the population standard deviation is not known but computed as the mean of the sample standard deviations (which you need to compute).

51254952094900430083322 8638309, 3 6 5 3 2 6 4 3 8 9 2 4 9 144 99090099900000009099009 11212211122222221211221 4 548632 22422831332 66336870015 5 3 90900090000900009990000 12122212222122221112222 332753204158272682964 740741402178090258007 90990900001090991900019 12112122222212112122221 62 4 2 16592998096037864571080 94230880316382947872346 90000990009090909900000 12222112221212121122222 1 H-12345678901234567890123

Explanation / Answer

xbar-Rchart

Xdoublebar 20.1053 Rbar 0.8783 A2(4) 0.729 D3(4) 0 D4(4) 2.282 Xbar Chart CL 20.1053 LCL 19.465 UCL 20.7456 Rchart CL 0.87833 LCL 0 UCL 2.00436

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