International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports The maximum possible rating is 10

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The International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports The maximum possible rating is 10. Suppose a simple random sample of 50 business travelers is selected and each traveler is asked to

provide a rating for the Miami International Airport. The ratings obtained from the sample of 50 business travelers follow.

6 4 6 8 7 7 6 3 3 8 10 4 8

7 8 7 5 9 5 8 4 3 8 5 5 4

4 4 8 4 5 6 2 5 9 9 8 4 8

9 9 5 9 7 8 3 10 8 9 6

Develop a 95% confidence interval estimate of the population mean rating for Miami.

(i)Infer about the dataset using:

(a)Histogram

(b)Boxplot

(c)Summary Measures

Find 90% confidence interval of the population average rating for Miami and write the assumption A recent issue of the AARP Bulletin reported that the average weekly pay for a woman with a high school diploma was $520 (AARP Bulletin. January. 2010). Suppose you would like to determine if the average weekly pay for all working women is significantly greater than that for women with a high school diploma. Data providing the weekly pay for a sample of 50 working women are available in the file named WeeklyPay. These data are consistent with the findings reported in the article mentioned above.

a. State the hypotheses that should be used to test whether the mean weekly pay for all women is significantly greater than the mean weekly pay for women with a high school diploma.

b. Use the data in the file named WeeklyPay to compute the sample mean, the test statistic, and thep-value.

c. Use c .05. What ¡s your conclusion?

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