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You are constructing a 90% confidence interval for one population mean. A sample if size 20...

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Basic Math

You are constructing a 90% confidence interval for onepopulation mean. A sample if size 20 is taken from the populationof interest. The mean from the sample is 5 and the standarddeviation is 1.5.

What is the t-score to be used in calculating Margin of Error?(do not round)

Answer & Explanation Solved by verified expert
4.4 Ratings (791 Votes)

At 90% confidence interval the critical value is t* = 1.729

                                  

                           

                                                     

                        

                                                                
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