Emma's On-the Go, a large convenience store, has to decide where in the store to put...

 

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Emma's On-the Go, a large convenience store, has to decide where in the store to put its magazine rack. The manager at Ermma's experiments with a selection of different locations, choosing a sample of days at each location. Each day, the manager records the amount of money brought in from the sale of magazines. It's possible to test whether there is a difference in the mean daily sales for the different locations by doing a one-way, independent-samples ANOVA test. The variable of interest is the daily sales, in dollars, from magazines at Emma's. In the ANOVA test, the "groups are the different locations, and the "samples" are the daily magazine sales actually examined by the manager. (a) The following ANOVA table gives a summary of such an ANOVA test. Fill in the missing cell in the table (rounded to two decimal places). Degrees of freedom Source of Sum of Mean square F statistic variation squares Between 2445.32 611.33 groups Error (within 230 92,276 401.2 groups) Total 234 94,721.32 (b) How many days total were sampled for the manager's experiment? (c) For the ANOVA test, it is assumed that the variance is the same for each population of daily sales (that is, for the populations of daily sales for each location). What is an unbiased estimate of this common population variance based on the sample variances? (d) Using the 0.10 level of significdace, what is the critical value of the F statistic for the ANOVA test? Round your answer to at least two decimal places. ALEKS → X COD Question 1 Emmanuel V Knowledge Check Degrees of freedom Source of Sum of Mean square F statistic variation squares Between 2445.32 611.33 groups Error 230 92,276 401.2 (within groups) Total 234 94,721.32 (b) How many days total were sampled for the manager's experiment? (c) For the ANOVA test, it is assumed that the variance is the same for each population of daily sales (that is, for the populations of daily sales for each location). What is an unbiased estimate of this common population variance based on the sample variances? (d) Using the 0.10 level of significance, what is the critical value of the F statistic for the ANOVA test? Round your answer to at least two decimal places. (e) Can we conclude, using the 0.10 level of significance, that there is a difference in the mean daily sales among the different locations? O Yes No I Don't Know Submit Emma's On-the Go, a large convenience store, has to decide where in the store to put its magazine rack. The manager at Ermma's experiments with a selection of different locations, choosing a sample of days at each location. Each day, the manager records the amount of money brought in from the sale of magazines. It's possible to test whether there is a difference in the mean daily sales for the different locations by doing a one-way, independent-samples ANOVA test. The variable of interest is the daily sales, in dollars, from magazines at Emma's. In the ANOVA test, the "groups are the different locations, and the "samples" are the daily magazine sales actually examined by the manager. (a) The following ANOVA table gives a summary of such an ANOVA test. Fill in the missing cell in the table (rounded to two decimal places). Degrees of freedom Source of Sum of Mean square F statistic variation squares Between 2445.32 611.33 groups Error (within 230 92,276 401.2 groups) Total 234 94,721.32 (b) How many days total were sampled for the manager's experiment? (c) For the ANOVA test, it is assumed that the variance is the same for each population of daily sales (that is, for the populations of daily sales for each location). What is an unbiased estimate of this common population variance based on the sample variances? (d) Using the 0.10 level of significdace, what is the critical value of the F statistic for the ANOVA test? Round your answer to at least two decimal places. ALEKS → X COD Question 1 Emmanuel V Knowledge Check Degrees of freedom Source of Sum of Mean square F statistic variation squares Between 2445.32 611.33 groups Error 230 92,276 401.2 (within groups) Total 234 94,721.32 (b) How many days total were sampled for the manager's experiment? (c) For the ANOVA test, it is assumed that the variance is the same for each population of daily sales (that is, for the populations of daily sales for each location). What is an unbiased estimate of this common population variance based on the sample variances? (d) Using the 0.10 level of significance, what is the critical value of the F statistic for the ANOVA test? Round your answer to at least two decimal places. (e) Can we conclude, using the 0.10 level of significance, that there is a difference in the mean daily sales among the different locations? O Yes No I Don't Know Submit