What were the average sales for the four weeks prior to the experiment?What were the sales during the four weeks when the stores used the digital display?What is the mean difference in sales between the experimental and regular POP time periods?State the null hypothesis being tested by the paired sample t-test.Do you reject or retain the null hypothesis?At a 95% significance level, was the difference significant? Explain why or why not using the results from the paired sample t-test.Should the manager of the retail chain install new digital displays in each store? Justify your answer. Pair 1Digital POP sales -4 weekwith experimental displayRegular POP sales -4 weekperiod prior to experimentPaired Samples StatisticsMeanNStd. DeviationStd. Error Mean9732.1636591958.46075254.969878959.9171591837.04393239.16275Paired Samples TestPaired Differences95% ConfidenceInterval of theDifferenceMeanStd.DeviationStd. ErrorMeanSig.LowerUppertdf(2-tailed)Pair 1Digital POP sales -4 week withexperimental703.7289588.8537955.63928.42display - Regular772.2465191.6177158647959.000POP sales - 4 weekperiod prior toexperiment

The average sales for the four weeks prior to the experiment, also known as the regular POP sales,…

Pair 1 Digital POP sales -4 week with experimental display Regular POP sales -4 week period prior to experiment Paired Samples Statistics Mean N Std. Deviation Std. Error Mean 9732.1636 59 1958.46075 254.96987 8959.9171 59 1837.04393 239.16275 Paired Samples Test Paired Differences 95% Confidence Interval of the Difference Mean Std. Deviation Std. Error Mean Sig. Lower Upper t df (2-tailed) Pair 1 Digital POP sales - 4 week with experimental 703.7289 588.8537 955.6392 8.42 display - Regular 772.24651 91.61771 58 6 4 7 9 59 .000 POP sales - 4 week period prior to experiment

Pair 1 Digital POP sales -4 week with experimental display Regular POP sales -4 week period prior to experiment Paired Samples Statistics Mean N Std. Deviation Std. Error Mean 9732.1636 59 1958.46075 254.96987 8959.9171 59 1837.04393 239.16275 Paired Samples Test Paired Differences 95% Confidence Interval of the Difference Mean Std. Deviation Std. Error Mean Sig. Lower Upper t df (2-tailed) Pair 1 Digital POP sales - 4 week with experimental 703.7289 588.8537 955.6392 8.42 display - Regular 772.24651 91.61771 58 6 4 7 9 59 .000 POP sales - 4 week period prior to experiment

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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