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prohojiy [21]
4 years ago
6

How many values are within two standard deviation of the mean

Mathematics
1 answer:
murzikaleks [220]4 years ago
3 0

Answer:

In statistics, the 68–95–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within a band around the mean in a normal distribution with a width of two, four and six standard deviations, respectively; more accurately, 68.27%, 95.45% and 99.73% of the values lie ...

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Write an expression to describe the relationship in each table 10,12,15. 7,9,12​
lesya [120]

Answer:

there is a pattern of 2 , 3 in each set of numbers

Step-by-step explanation:

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Serenity picked 75% of the apples of a tree in her backyard. If she picked 30 apples, how many apples were on the tree to begin
Stells [14]

Given:

Serenity picked 75% of the apples of a tree in her backyard.

She picked 30 apples.

To find:

The number of apples on the tree in the beginning.

Solution:

Let x be the number of apples on the tree in the beginning.

Serenity picked 75% of the apples of a tree in her backyard.

Number of apples picked = 75% of x

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\dfrac{3}{4}x=30

Multiply both sides by 4.

3x=4\times 30

3x=120

Divide both sides by 3.

x=\dfrac{120}{3}

x=40

Therefore, the number of apples on the tree in the beginning is 40.

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Step-by-step explanation:

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A circular mirror has a diameter of 12 inches what is the are in square inches of the mirror?
pochemuha

The area of a circle is <u>(pi) x (the circle's radius)</u>²

The circle's radius is (1/2) of (its diameter).

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