A committee of four is selected from a total of 4 freshmen, 5 sophomores, and 6 juniors (obviously without replacement since one person can't simultaneously fill two committee spots).
Using combinations, determine the probability that:
a. at least three freshmen.are selected
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971 ________
b. all four selected are of the same class (order of selection doesn't matter)
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971 ________
c. all four selected are NOT of the same class (order of selection doesn't matter)
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971 ________
d. exactly three of the same class are selected (order of selection doesn't matter)
Enter probability as a fraction or as a decimal rounded to nearest thousandth (three places). Examples of correctly entered responses:
3/5 5/11 0.300 0.650 0.971