In a set of 100 ACT scores that are normally distributed and with a mean of 23 and standard deviation of 4.69, (a) how
many scores are expected to be lower than 18.31 (one
standard deviation below the mean)? (b) How many of the
100 scores are expected to be below 32.38 (two standard
deviations above the mean)?

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Which of the following is true for the relation f(x)=2x^2+1