1.   Find the mean of the set {14, 16, 23, 9, 13, 31, 12, 28}.
    A. 15 B. 16.5
    C. 18.25 D. 19
    Hint

  2.   The curve shown is________.
   
    A. negatively skewed B. not skewed
    C. normal D. positively skewed
    Hint

  3.   The letters from the word ''alert'' are used to form a password into a school computer system. How many 5-letter passwords can be formed if the letters can be used more than once?
    A. 120 B. 3125
    C. 50 D. 625
    Hint

  4.   How many different ways can the letters of ''MATH'' be arranged?
    A. 4 B. 12
    C. 8 D. 24
    Hint

  5.   How many lines are determined by 7 points, no three of which are collinear?
    A. 42 B. 105
    C. 200 D. 21
    Hint

  6.   A box of crayons contains 8 blue, 9 red, and 13 yellow. Find the probability of first choosing a yellow, then a blue, and then another yellow crayon if there is no replacement.
    A. B.
    C. D.
    Hint

  7.   The Boor Foundation conducted a poll asking people to name the most serious problem facing the nation. Of the 600 people polled, 48% of the randomly selected people answered education. Find the margin of error for this sampling.
    A. 24.96 B. 0.0407922
    C. 0.5200 D. 0.2039608
    Hint

  8.   The number of professional football players is 1200. Suppose 500 are on the offense, 500 are on the defense, and 60 play both offense and defense. What is the probability that a football player selected at random plays on the offense or the defense?
    A. B.
    C. D.
    Hint

  9.   How many ways are there to correctly answer 2 out of 7 true-or-false questions?
    A. 2520 B. 42
    C. 2 D. 21
    Hint

  10.   In order to determine the preferred shampoo of women, 100 men were asked what kind of shampoo their wives used. Assuming that each knew for sure what their wives used, is this a random sample? If not, why is it not?
    A. no, because the study is asking men B. yes
    C. no, because the study is only getting results about married women D. no, because women change shampoo too frequently
    Hint