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Does it ever seem to you that the weather is nice during the work week, but lousy on the weekend? Cerveny and Balling (1998) have confirmed that this is not your imagination—pollution accumulating during the work week most likely spoils the weekend weather for people on the Atlantic coast. Consider the following hypothetical data showing the daily amount of rainfall for 10 weeks during the summer.

Week Average Daily Average Daily
Rainfall on Weekdays (Mon-Fri) Rainfall on Weekends (Sat-Sun)

1 1.2 1.5
2 0.6 2.0
3 0.0 1.8
4 1.6 1.5
5 0.8 2.2
6 2.1 2.4
7 0.2 0.8
8 0.9 1.6
9 1.1 1.2
10 1.4 1.7

a. Calculate the average daily rainfall (the mean)
during the week, and the average daily rainfall for
b. Based on the two means, does there appear to be a
pattern in the data?

  • statistics -

    We do not do your work for you. Once you have attempted to answer your questions, we will be happy to give you feedback on your work. Although it might require more time and effort, you will learn more if you do your own work. Isn't that why you go to school?

  • statistics -

    Daily rainfall mean during the week= 99
    Daily rainfall mean during the weekend=167

    Yes, amount of rainfall in the weekend is more than in the weekdays

  • statistics -

    mean during the week- 3.53

    mean during the weekend- 8.85

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