i want you to type edit and answer the following stats questions

I posted two links from slader and chegg blew for the answers. You need to double check, edit and type the right answers

1. Athletes ages three The research in exercise 12 decide to test the hypothesis. The degrees of freedom formula gives 51.83 df. Test the null hypothesis at a = 0.05. Is the alternative one or two sided?

Answer link for slader

https://www.slader.com/textbook/9780321986498-stat…

2. NY marathon 2013 The table below shows the winning time (in minutes) for men and women in the New York City Marathon between 1978 and 2013. (The race was not run in 2012 because of Superstorm Sandy.). Assuming that performance in the Big Apple resemble performance elsewhere, we can think of these data as a sample of performance in marathon competitions. Create a 90% confidence interval for the mean difference in winning times for male and female marathon competitors. (www.nycmarathon.org)

Answer link form slader

https://www.slader.com/textbook/9780321986498-stat…

 

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