If a randomly selected individual is observed to earn at least ...

[crazycityslicker]

If a randomly selected individual is observed to earn at least 50,000 per year, what is the probability that this person is a man?

Question 2

A researcher can check whether the errors are normally distributed by using:
 a. a t-test or an F-test
  b. the Durbin-Watson statistic
  c. a frequency distribution or the value of the regression coefficient
  d. a histogram or a Q-Q plot

[lauravaras]

Answer to Question 1

0.5556

Answer to Question 2

d