Ask question

Ask question

All categories

2 years ago

9

Please help help help

1 answer:

3241004551 [841]2 years ago

5 0

The value of the mean is 3 for normal curve C and the value of the mean is 4 for the normal curve D, and for both data standard deviation is the same.

<h3>What is a normal distribution?</h3>

It's the probability curve of a continuous distribution that's most likely symmetric around the mean. On the Z curve, at Z=0, the chance is 50-50. A bell-shaped curve is another name for it.

We have a normal distribution curve shown in the picture.

For the normal curve C:

The value of mean = 3 (draw a vertical line in the middle of the curve)

For the normal curve D:

The value of mean = 4 (draw a vertical line in the middle of the curve)

For both data standard deviation is the same.

Thus, the value of the mean is 3 for normal curve C and the value of the mean is 4 for the normal curve D, and for both data standard deviation is the same.

Learn more about the normal distribution here:

brainly.com/question/12421652

#SPJ1

You might be interested in

Blue Bird began at the location (6,0) and hit the ground at (26,0). Write a polynomial equation that could represent his flight

Bogdan [553]

Skjsbdksnsnsmsmznsjdhsbdjdns

6 0

4 years ago

Find the standard deviation of the following data. Round your answer to one decimal place. x 0 1 2 3 4 5 P(X

lbvjy [14]

Answer:

<em></em> $\sigma = 1.8$ <em></em>

<em></em>

Step-by-step explanation:

Given

$\begin{array}{ccccccc}x & {0} & {1} & {2} & {3} & {4}& {5} \ \\ P(x) & {0.2} & {0.1} & {0.1} & {0.2} & {0.2}& {0.2} \ \end{array}$

Required

The standard deviation

First, calculate the expected value E(x)

$E(x) = \sum x * P(x)$

So, we have:

$E(x) = 0 * 0.2 + 1 * 0.1 + 2 * 0.1 + 3 * 0.2 + 4 * 0.2 + 5 * 0.2$

$E(x) = 2.7$

Next, calculate E(x^2)

$E(x^2) = \sum x^2 * P(x)$

So, we have:

$E(x^2) = 0^2 * 0.2 + 1^2 * 0.1 + 2^2 * 0.1 + 3^2 * 0.2 + 4^2 * 0.2 + 5^2 * 0.2$

$E(x^2) = 10.5$

The standard deviation is:

$\sigma = \sqrt{E(x^2) - (E(x))^2}$

$\sigma = \sqrt{10.5 - 2.7^2}$

$\sigma = \sqrt{10.5 - 7.29}$

$\sigma = \sqrt{3.21}$

<em></em> $\sigma = 1.8$ <em> --- approximated</em>

5 0

3 years ago

About 7/10 of the surface of the earth is covered with water. Express this as an equivalent fraction with 100 as the denominator

larisa [96]

Answer:

70/100

Step-by-step explanation:

Surface of the earth covered with water = 7/10

Equivalent fraction of 7/10 with 100 as the denominator = 70/100

This means 70% of the earth surface is covered with water

Percentage covered with land = Total percentage - percentage covered with water

= 100/100 - 70/100

= 100-70/100

= 30/100

Percentage covered with land = 30%

8 0

3 years ago

Trisha drew a pair of line segments starting from a vertex. Which of these statements best compares the pair of line segments wi

Ksju [112]

The <em>correct answer</em> is:

C) Line segments have two endpoints and a vertex is a common endpoint where two line segments meet.

Explanation:

A line segment is defined as a portion of a line that has two endpoints.

A vertex is defined as the common endpoint of two or more rays or line segments.

This makes C the correct option.

6 0

3 years ago

Read 2 more answers

If a line falls on the points (11, 13) and (4, 12), what is its slope? Enter your answer as a fraction in lowest terms. Use a sl

loris [4]

2/14= 1/7

I just graphed them then did the slope which was rise over run

8 0

3 years ago