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There are 5 red, 18 green, and 17 blue pens in a bag. Leah selects a pen 800 1

times without looking. Before each selection, she replaces the pen in the

bag. Write and evaluate an expression to predict the number of times Leah

selects a pen that is red or green. *

Respuesta :

MrRoyal

The number of times Leah is expected to select a pen that is red or green is 460 and the expression is 23/40 * 800

How to determine the expected selection of red or green pen?

The distribution of the pen is given as:

Red = 5

Green = 18

Blue = 17

The number of red or green pen is:

Red or green = 5 + 18

Evaluate

Red or green = 23

In a selection of 800 pen, the expected number of red or green pen is:

E(x) = 23/(5 + 18 + 17) * 800

Evaluate the sum

E(x) = 23/40 * 800

Evaluate the expression

E(x) = 460

Hence, the number of times Leah is expected to select a pen that is red or green is 460

Read more about expected values at:

https://brainly.com/question/15858152

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