For a particular consumer product, the mean dollar sales per retail outlet last year in a sample of n 1 10 stores was $3,425 with s 1 $200 For a second product the mean dollar sales per outlet in a sample of n 2 12 stores was $3,250 with s 2 $175 The sales amounts per outlet are assumed to be norma...

90 CI for o Sample Standard deviation 5 200 Sample Size n 10 Significance level a 1 09 01 Degrees o ...

For a particular consumer product, the mean dollar sales per retail outlet last year in a sample

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For a particular consumer product, the mean dollar sales per retail outlet last year in a sample of n₁ = 10 stores was= $3,425 with s₁ = $200. For a second product the mean dollar sales per outlet in a sample of n₂ = 12 stores was= $3,250 with s₂ = $175. The sales amounts per outlet are assumed to be normally distributed for both products. Estimate the difference between the mean level of sales per outlet last year using a 90 percent confidence interval.