Suppose that 80% of books are classified as fiction. Two books are chosen at random. What is the probability that both books ara fiction?

Answers

Answer 1

Answer:

64% or 16/25

Explanation:

To calculate probability, we first find the fraction for the number of books that are fiction.

[tex]80= \frac{4}{5}[/tex]

To find out what the probability of choosing a fiction book twice, we multiply 4/5 with 4/5 to get our probability if we selected a book twice.

[tex]\frac{4}{5} *\frac{4}{5} = \frac{16}{25} \\0.64[/tex]

The probability of choosing two fiction books is a 16/25, or 64% chance.


Related Questions

I NEED HELP PLEASE ANSWER QUICK (SAT Prep) In the given figure, a ∥ b. Find the value of z. A. 50° B. 90° C. 45° D. 75°

Answers

Answer:

C

Explanation:

The two z angles form a 90° angle so one z angle would be 45°

Answer:

C. 45°

Explanation:

half of 90° to a perpendicular is equal to 45°

Find the volume, in cubic inches, of the composite solid below, which consists of a 4 -inch square solid rectangular bar that is 16 inches in length. The bar has a 2 -inch diameter cylinder hole cut out of the center of the bar from the top of the bar through the entire length of the bar. Use 3.14 to find the volume. Enter only the number.

Answers

Answer:

10 in³

Explanation:

given:

square box = 4 in²,  length = 16 in

bar diameter = 2 in,   length = 16 in

box volume (in solid) = 4 in² * 16 in = 64 in³

bar volume = pi * d² / 4 = 3.14 * 2² / 4 *  16 in = 50.24 in³

Volume of slotted box = 64 - 50 = 10 in³

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