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lakkis [162]
1 year ago
8

A normal population has a mean u = 31 and standard deviation = 10. What proportion of the population is less than 30?​

Mathematics
1 answer:
natulia [17]1 year ago
4 0

The proportion of the population exists less than 30 then

(x< 30) = 0.986.

<h3>How to estimate the proportion of the population that exists less than 30?​</h3>

To estimate the z-score using the formula, z = (x - µ)/σ

Where, x be the randomly chosen values = 30

µ be the mean = 31

σ be the standard deviation = 10

Proportion of the population that exists less than 18 = P(x < 30)

Plug in the values into z = (x - µ)/σ, to get z-score.

Substitute the values in the above equation, we get

z = (30 - 31)/10

z = -1/10 = -0.1

Therefore, the value of z = - 0.1.

To learn more about proportion of the population refer to:

brainly.com/question/18403865

#SPJ9

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Answer:

The answer to this question is given below in the explanation section.

Step-by-step explanation:

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1. The fraction of the first recipe is 1/3 so the ratio is 1:3(water to cup)

2. The fraction of the second recipe is 4/12

which can be simplified as 4/12=1/3 so the ratio is 1:3(water to cup)

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No recipe taste different, all the recipe taste the same. Because all the recipe ratios are equivalent.

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Of the 528 clients at Bernie's salon, 122 of them have black hair. What is the probability that a randomly selected client at Be
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<h3>What is the probability?</h3>

Probability measures the odds that a stated event would occur. The odds the event happens lies between 0 and 1.

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122 / 528 = 61 / 264

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