Question

In: Statistics and Probability

. A chain that specializes in healthy and organic food would like to compare the sales...

. A chain that specializes in healthy and organic food would like to compare the sales performance of two of its primary stores in the state of Massachusetts. These stores are both in urban, residential areas with similar demographics. Assuming equal variances, a comparison of the weekly sales randomly sampled over a period of nearly two years for these two stores yields the following information (reported in $1,000). Is there a difference in sales between the two stores?

Store

N

Mean

StDev

Store #1

9

242

24

Store #2

9

235

30

  1. State the null and alternative hypotheses
  2. What is the test statistic?
  3. Using a .05 significance level, what is the decision rule?
  4. Show the test statistic and essential calculations.
  5. What do you conclude? State you findings in a sentence

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