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Problems 63鈥�66 are based on a consumer survey of annual incomes in 100 households. The following table gives the data.

What is the probability that a household has an annual income of $20,000 or more?

In a survey about the number of TV sets in a house, the following probability table was constructed:

Find the probability of a house having:

(a) 1 or 2 TV sets

(b) 1 or more TV sets

(c) 3 or fewer TV sets

(d) 3 or more TV sets

(e) Fewer than 2 TV sets

(f ) Fewer than 1 TV set

(g) 1, 2, or 3 TV sets

(h) 2 or more TV sets

Through observation, it has been determined that the probability for a given number of people waiting in line at the 鈥�5 items or less鈥� checkout register of a supermarket is as follows:

Find the probability of:

(a) At most 2 people in line

(b) At least 2 people in line

(c) At least 1 person in line

In a certain Precalculus class, there are 18 freshmen and 15 sophomores. Of the 18 freshmen, 10 are male, and of the 15 sophomores, 8 are male. Find the probability that a randomly selected student is:

(a) A freshman or female

(b) A sophomore or male

If A and B are finite sets, the Counting Formula states that$n\left(A鈭�B\right)=$______.

Determine whether the following is a probability model.

What is exact value of ${\log }_{3}9$?.

Find the value of each permutation.

$P(6,2)$

Compute the value of the given expression.

$7.C\left(11,5\right)$