Question: The statistical program MINITAB will calculate the small sample confidence interval for (mu). With the nanopillar height data in (mathrm{C} 1), produces the output (a)

The statistical program MINITAB will calculate the small sample confidence interval for $\mu$. With the nanopillar height data in $\mathrm{C} 1$,

Dialog box: Stat > Basic Statistics > 1-Sample t. Click on box

produces the output

and type C1. Choose Options. Type 0.95 in Confidence level and choose

(a) Obtain a $90 \%$ confidence interval for $\mu$.

(b) Obtain a 95\% confidence interval for $\mu$ with the aluminum alloy data on page 29.
Alternatively, you can use the MINITAB commands Stat $>$ Basic statistics $>$ Graphical summary to produce the more complete output

not equal. Click OK. Click OK

Dialog box: Stat > Basic Statistics > 1-Sample t. Click on box and type C1. Choose Options. Type 0.95 in Confidence level and choose not equal. Click OK. Click OK

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