A consumer advocacy group received a tip that an air conditioning company has been charging female customers more than male customers. The group's statistical expert decides examine this question at the alpha = 0.01 level of significance, by looking at the difference in mean charges between a random sample of female customers and a random sample of male customers. Let represent the average charges for female customers and mu M represent the average charges for male customers( Rou
A consumer advocacy group received a tip that an air conditioning company has been charging female customers more than male customers. The group's statistical expert decides examine this question at the alpha = 0.01 level of significance, by looking at the difference in mean charges between a random sample of female customers and a random sample of male customers. Let represent the average charges for female customers and mu M represent the average charges for male customers( Round your results to three decimal places)
1. Which would be correct hypotheses for this test? O H 0 : mu F - mu M =0 H 1 : mu F - mu M >0 O H 0 : mu F - mu M =0 , H 1 : mu F - mu K <0 O H 0 : mu F - mu M =0 , H 1 : mu F - mu M ne0 O H 0 : mu F - mu M >0,H 1 : mu F - mu M <=0
2. If we are going to test this using a confidence interval, which confidence interval should we construct? O 96 % 99 % 99.5 % 98 %
A random sample of 46 female customers were charged an average of $917, with a standard deviation of $10. A random sample of 37 male customers were charged an average of $ 896, with a standard deviation of $17.
3. Construct the confidence interval : < uf-Um
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