| Problem |
Hint |
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3) There are 5 red balls, 2 yellow balls, and 1 orange ball in a bag. You will select a ball without
looking and then put it back. If you do this 60 times, how many times would you expect to pick a
yellow ball? |
1. What is the total number of balls? ____
2. What is the fraction of the total that are yellow? _____
3. Multiply this fraction times the number of picks = _____
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4) What number would you add to this list to make the median the same as the mode?
75, 63 75, 20, 15, 70, 63, 21 |
1. Rearrange the numbers into numerical order:
___ ___ ___ ___ ___ ____ ___ ___
2. The median of this set is _____.
3. Since there are two 63s and two 75s, in order to have a single mode you must add a ____. |
5) The mean of 4 numbers is 16. When the smallest number is removed, the mean of the remaining
3 numbers is 17. What number was removed? |
This is actually an algebra problem.
Call the smallest number N
Call the sum of the 3 larger numbers N3
1. Write an equation for "the mean of 4 numbers is 16" using the above variables: _______________
2. Write an equation for "the mean of the remaining 3 numbers is 17" using the above variables = ____________
3. Solve the second equation for N3 = _____
4. Using this value for N3,put it in the first equation and solve:
N = _________________
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1. The total number of combinations of the product of two dice is ____.