Essay
A stylist at The Hair Care Palace gathered data on the number of hair colorings given on Saturdays and on weekdays. Her results are listed below. Assume the two samples were independently taken from normal populations. 
Find the point estimate of p1 - p2.
______________
Find the margin of error.
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Estimate the difference in the true proportions with a 99% confidence interval.
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Interpret this interval.
________________________________________________________
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0.08; 0.158; (-0.128, 0.288); ...View Answer
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