Question

Asked Nov 10, 2019

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I'm having a hard time solving part (b) correctly. I'm using the formula

s = sqrt [ Σ ( x_{i} – x_bar )^{2} / ( n – 1 ) ]. For Σ ( x_{i} – x_bar )^{2} I get the value 18.3132 and for ( n – 1 ) the value 11. When I solve for s= 1.29. However, it is the incorrect answer. I'm not sure what I'm doing wrong. I receive the value 18.3132 from subtracating the sample mean from each data entry and squared the result. The sum of all the results to equals 18.3132.

Can you please explain what I should do differently to get the correct answer. Thanks

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Step 1

According to the provided information,

Step 2

In order to calculate the standard deviation ...

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