Mathematics, 02.02.2020 12:41 eaves001

You are performing an experiment to determine how well plants grow under different light sources. of the 30 plants in the experiment, 12 receive visible light, 15 receive ultraviolet light, and 6 receive both visible and ultraviolet light. what is the probability that a plant in the experiment receives visible or ultraviolet light? explain so i can know how to do a similar question in the future.

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Answer from: allisonatalie9169

The required probability that a plant in the experiment receives visible or ultraviolet light is $\dfrac{7}{10}$ .

Given that,

The total number of plants in the experiment = 30 plants,

Plants that receive visible light alone = 12 plants,

Plants that receive ultraviolet light alone = 15 plants,

Plants that receive both visible and ultraviolet light = 6 plants.

We have to determine,

The probability that a plant in the experiment receives visible or ultraviolet light.

According to the question,

To find the probability of the plants in the experiment by using the formula given below.

$Probability = \dfrac{Number \ of \ required \ events }{ Total \ number \ of \ events}$

Then, The probability of plants that receive visible light alone is,

$P(visible) = \dfrac{12}{30}\\\\P(visible) = \dfrac{2}{5}$

The probability of plants that receive ultraviolet light alone is,

$P(ultraviolet) = \dfrac{15}{30}\\\\P(ultraviolet) = \dfrac{1}{2}$

The Probability of plants that receive both visible and ultraviolet light,

$P(both) = \dfrac{6}{30}\\\\P(both) = \dfrac{1}{5}$

Therefore,

The probability that a plant in the experiment receives visible or ultraviolet light is,

$P(visible \ or \ ultraviolet ) = P(visible) + P (ultraviolet) + P (both)\\\\P(visible \ or \ ultraviolet ) = \dfrac{2}{5} + \dfrac{1}{2} - \dfrac{1}{5}\\\\P(visible \ or \ ultraviolet ) = \dfrac{4+5-2}{10}\\\\P(visible \ or \ ultraviolet ) = \dfrac{7}{10}$

Hence, The required probability that a plant in the experiment receives visible or ultraviolet light is $\dfrac{7}{10}$ .

To know more about Probability click the link given below.

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Answer from: whiterm04

The probability that a plant in the experiment receives visible or ultraviolet light is 7/10.

Step-by-step explanation:

The total number of plants in the experiment = 30 plants

Plants that receive visible light alone = 12 plants

Plants that receive ultraviolet light alone = 15 plants

Plants that receive both visible and ultraviolet light = 6 plants

step 1 :

Probability = No. of required events / Total number

step 2 :

P(visible) = 12 / 30

P(ultraviolet) = 15 / 30

P(both) = 6 / 30

step 3 :

P(visible or ultraviolet) = P(visible) + P(ultraviolet) - P(both)

= 12/30 + 15/30 - 6/30

= 21/30

P(visible or ultraviolet) = 7/10

Answer from: Quest

That’d be 9 years or something

Answer from: Quest

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94

Can someone plz answer this for me? whoever answers it first, i will give !

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