Number of Salon Hair Colourings Narrative
A stylist at the Hair Care Palace gathered data on the number of hair colourings given on Saturdays and on weekdays. Her results are listed below. Assume the two random samples were independently taken from normal populations.
Saturday: = 50 and = 14
Weekday: = 65 and = 13
-Refer to Number of Salon Hair Colourings Narrative. Estimate the difference in the true proportions with a 99% confidence interval. Interpret this interval.

Question

Number of Salon Hair Colourings Narrative
A stylist at the Hair Care Palace gathered data on the number of hair colourings given on Saturdays and on weekdays. Her results are listed below. Assume the two random samples were independently taken from normal populations.
Saturday:  = 50 and  = 14
Weekday:  = 65 and  = 13
-Refer to Number of Salon Hair Colourings Narrative. Estimate the difference in the true proportions with a 99% confidence interval. Interpret this interval.

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The Answer of Number of Salon Hair Colourings Narrative
A stylist at the Hair Care Palace gathered data on the number of hair colourings given on Saturdays and on weekdays. Her results are listed below. Assume the two random samples were independently taken from normal populations.
Saturday:  = 50 and  = 14
Weekday:  = 65 and  = 13
-Refer to Number of Salon Hair Colourings Narrative. Estimate the difference in the true proportions with a 99% confidence interval. Interpret this interval.