Which value of w makes 14 = 11+ w . 6 a true statement?! 8 Chon

Find the area. Don't need explanation

lara [203]

The answer should be 84

8 0

3 years ago

The following function is probability mass function. -2 -1 0 1 2 1/8 2/8 2/8 2/8 1/8 Determine the mean, , and variance, , of th

Digiron [165]

Answer:

The mean of the random variable is 0.

The variance of the random variable is $\frac{3}{2}$

Step-by-step explanation:

We are given the following probability distribution:

$P(X = -2) = \frac{1}{8}$

$P(X = -1) = \frac{2}{8}$

$P(X = 0) = \frac{2}{8}$

$P(X = 1) = \frac{2}{8}$

$P(X = 2) = \frac{1}{8}$

Mean:

Sum of each value multiplied by its probabilities. So

$E(X) = -2\frac{1}{8} -1\frac{2}{8} + 0\frac{2}{8} + 1\frac{2}{8} + 2\frac{1}{8} = \frac{-2 -1 0 + 1 + 2}{8} = \frac{0}{8} = 0$

The mean of the random variable is 0.

Variance:

Sum of the difference squared between each value and the mean, multiplied by its probabilities. So

$V(X) = \frac{1}{8}(-2-0)^2 +\frac{2}{8}(-1-0)^2 + \frac{2}{8}(0-0)^2 + \frac{2}{8}(1-0)^2 + \frac{1}{8}(2-0)^2 = \frac{4 + 2 + 0 + 2 + 4} = \frac{12}{8} = \frac{3}{2}$

The variance of the random variable is $\frac{3}{2}$

5 0

3 years ago

Find the quotient 3/5 divided by 8

Black_prince [1.1K]

Answer:

A.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Troy made a scale drawing of the Statue of Liberty which has an actual height of 305 feet. He decides to use a scale in which 1

sergiy2304 [10]

The height of statue is 12.2 inches in Troy's drawing.

Step-by-step explanation:

Given,

Actual height of statue = 305 feet

Scale used by Troy;

25 feet = 1 inch

1 feet = $\frac{1}{25}\ inches$

305 feet = $\frac{1}{25}*305 \ inches$

305 feet = $\frac{305}{25}\ inches\\$

305 feet = 12.2 inches

The height of statue is 12.2 inches in Troy's drawing.

Keywords: unit rate, division

Learn more about unit rate at:

#LearnwithBrainly

3 0

4 years ago

Vassil rounded to the nearest half to estimate the product of Five-eighths and StartFraction 8 over 9 EndFraction. How do the es

Monica [59]

estimate the the nearest half....

5/8....it is closer to 4/8(which is 1/2) then it is to 8/8(which is 1)...so we will round 5/8 to 1/2

8/9....it is closer to 9/9 (which is 1) then it is to 4.5/9 (which is half)...so we will round 8/9 to 1

" the product " means multiply

so 1 * 1/2 = 1/2 (or 0.50) <== estimate

actual : 5/8 * 8/9 = 5/9 (or 0.55) <== actual

5 0

3 years ago

Read 2 more answers