Mathematics, 22.01.2021 19:30, TanelleK9546

a soap manufacturing company was distributing a particular number of retail shop. before heavy advertisement campaign, the mean sales per week per shop was 140 dozens. after campaign, a sample of 26 shops was taken and the mean sales was found to be 147 dozen with standard deviation 16. can you consider the advertisement effective?

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a soap manufacturing company was distributing a particular number of retail shop. before heavy adver...