You have the following output on the R console: > head(Salaries) Gender Salary 1 Male 43000...

You have the following output on the R console:

> head(Salaries)

Gender Salary

1 Male 43000
2 Female 45000
3 Male 95000
4 Female 88000
5 Male 76000
6 Female 55000

Your manager wants you to write some R code that will test whether there is a difference in the mean salary between Males and Females.

a) How would you use R to store vectors that contain only salaries by gender?

b) If x represents the vector of Male salaries and y represents the vector of Female salaries, what line of code in R tests for a difference in the means?

c) You are not told whether to conduct a one-sided or a two-sided test. Discuss why you might choose one over the other.

d) Suppose you conduct a two-sided test and the p-value is 0.06. What would you tell the manager?

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orchestra answered 2 years ago

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