Problem 1.2:
The mean of a set of
10 numbers is
67. If the values
99 and
67 are removed from the set, what is the new mean?
Hint: Find the total of the 10 original numbers.
Problem 1.4:
The median of
{9, 12, 16, -3, 5x + 2} is
12. What are the possible values of
x?
Write your answer as an inequality.
Problem 1.5:
The mode of
{4, 5, 1, 4, 4, 9, 5, x} is 4. What are the possible values of
x? Write
your answer as an inequality.
Problem 1.6:
Bill picks
5 whole numbers. Four of them are
{2, 4, 7, 2}. The
range of his numbers is
5. The median of his numbers is
4. The
mode of his numbers is
2. The mean of his numbers is not equal to
4.2. What is the fifth number?
