The weights (in ounces) of 17 randomly selected superzoom digital cameras are listed. Use a 95% level of confidence. Assume the sample is from a normally distributed population and construct the indicated confidence intervals for (a) The population variance σ^2 and (b) The population standard deviation σ. Interpret the results.
Added by Gregorio P.
Step 1
x̄ = (sum of all weights) / 17 s = sqrt[ (sum of squared differences between each weight and x̄) / (17 - 1) ] Show more…
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