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3 years ago

About what percentage of the data lies within 2 standard deviations of the mean in a normal distribution? 47. 5% 68% 95% 99. 7%.

1 answer:

5 0

The percentage of data that lies within 2 standard deviations of the mean in a normal distribution is 95%.

A normal distribution is a probability distribution that is symmetric around the mean of the distribution. This means that the there are more data around the mean than data far from the mean. A normal distribution is also known as the Gaussian distribution. When depicted on a graph, a normal distribution is bell-shaped.

For a normal distribution:

About 68% of the data lie within one standard deviation of the mean.
About 95% of the data lie within two standard deviations of the mean.
About 99.7% of the data lie within three standard deviations of the mean.

Please find attached an image of a normal distribution. A similar question was answered here: brainly.com/question/17101164

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Is 2 yards greater than 5 feet?

Gelneren [198K]

Hey there!

The correct answer to your question is yes.

1 yard = 3 feet

2 yards = 6 feet (since 3 x 2 = 6)

6>5

2 yards is greater.

Hope this helps you.
Have a great day!

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4 years ago

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bonufazy [111]

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3 years ago

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Which pair of

ycow [4]

12 and 23

Two numbers are relatively prime only when they have 1 as the common factor . or in other words they can not be divided by any other number other than 1 and itself.
To find
relative prime
of two numbers we need to find the HCF of the numbers. If the HCF is 1, then the two numbers are said to be relatively primes or in other words only 1 should be common as factor.

factor of 23 = 2, 2, 3, 1

factor of 23 = 23, 1

here only 1 is a common factor.

To know more about relatively prime visit : brainly.com/question/28044613

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1 year ago

(50 POINTS) (PLEASE ANSWER THE QUESTION, NOT JUST TRY AND TAKE MY POINTS, I NEED HELP ON THIS SO DO NOT ANSWER IF YOU DO NOT KNO

jarptica [38.1K]

Answer:

No, there is no proportional relationship

Step-by-step explanation:

<u>The proportional relationship is:</u>

y = kx, which is a special form of linear equation, with zero y-intercept

<u>In the given case we have:</u>

y = 4.5x + 10

This is a linear function but not proportional relationship because it has y-intercept, different than zero

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3 years ago

If the sum of the measures of the interior angles of a polygon is 5400 how many sides does it have

MariettaO [177]

Think of it backwards. To get the total measure of the interior angles of a polygon, you divide the polygon into triangles, where a base of each triangle makes up a side of the polygon, and every triangle shares a vertex towards the center of the polygon. We know that the sum of the interior angles in triangles is 180 degrees. Two of the 3 interior angles of each triangle make up the interior angles of the entire polygon. If you add up the third angle of each triangle, you will get 360 degrees. So, the sum of the interior angles of a polygon is equal to the number of sides the polygon has times 180 degrees minus 360 degrees. Written as an expression, you get:
180n-360, where n is the number of sides a polygon has.
Set this equal to 5400 to get the answer:
5400=180n-360
180n=5760
n=32

So the polygon has 32 sides.

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3 years ago

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