The normal approximation to the binomial distribution is most ...

[clmills979]

The normal approximation to the binomial distribution is most useful for finding which of the following?
 a. The probability P(X = k) when X is a binomial random variable with small n.
  b. The probability P(X  k) when X is a binomial random variable with large n.
  c. The probability P(X = k) when X is a normal random variable with small n.
  d. The probability P(X  k) when X is a normal random variable with large n.

Question 2

A randomly selected sample of 60 mathematics majors spent an average of 200.00 for textbooks one term, while during the same term, a randomly selected sample of 40 literature majors spent an average of 180.00 for textbooks. The standard deviation for each sample was 20.00 . The standard error for the difference between the two sample means is
 a. 0.057
  b. 4.082
  c. 5.744
  d. 16.663

[marict]

Answer to Question 1

B

Answer to Question 2

B