The margin of error for the results of a survey takes into ...

[Bob-Dole]

The margin of error for the results of a survey takes into account
 a. error due to biased wording of questions.
  b. error due to the order in which questions are presented.
  c. variability due to random sampling.
  d. all of the above.

Question 2

A large company examines the annual salaries for all of the men and women performing a certain job and finds that the means and standard deviations are 32,120 and 3,240, respectively, for the men and 34,093 and 3521, respectively, for the women. The best way to determine if there is a difference in mean salaries for the population of men and women performing this job in this company is
 a. to compute a 95 confidence interval for the difference.
  b. to subtract the two sample means.
  c. to test the hypothesis that the population means are the same versus that they are different.
  d. to test the hypothesis that the population means are the same versus that the mean for men is higher.

[yasmin]

Answer to Question 1

C

Answer to Question 2

B

[Bob-Dole]

Excellent

[mjenn52]

Gracias!