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3 years ago

Hi can someone please answet this question for me im a bit confused

Mathematics

1 answer:

Jobisdone [24]3 years ago

3 0

Answer:

Step-by-step explanation:

for each point (A, B, C) reduce the 'x-value' by two and reduce the 'y-value' by 7

for example, for point A:

to find A': (-6, -7) would be (-6-2, -7-7) which is (-8, -14)

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A Gallup Poll showed that 30% of Americans are satisfied with the way things are going in the United States. Suppose a sample of

mars1129 [50]

The expected number of a distribution is its mean.

The expected number of Americans who are satisfied with the way things are going in the United States is 6
The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05

The given parameters are:

$\mathbf{p = 30\%}$ --- the proportion that are satisfied

$\mathbf{n = 20}$ --- the sample size

(a) The expected number that are satisfied

This is calculated using:

$\mathbf{E(x) = np}$

So, we have:

$\mathbf{E(x) = 20 \times 30\%}$

$\mathbf{E(x) = 6}$

The expected number of Americans who are satisfied with the way things are going in the United States is 6

(b) The standard deviation of those that are satisfied

This is calculated using:

$\mathbf{\sigma = \sqrt{n \times p \times (1 - p)}}$

So, we have:

$\mathbf{\sigma = \sqrt{20 \times 30\% \times (1 - 30\%)}}$

$\mathbf{\sigma = \sqrt{20 \times 30\% \times 70\%}}$

$\mathbf{\sigma = \sqrt{4.2}}$

$\mathbf{\sigma = 2.05}$

The standard deviation of Americans who are satisfied with the way things are going in the United States is 2.05

Read more about expected value and standard deviations at:

brainly.com/question/17088771

4 0

3 years ago

Please help I’m doing super bad

Juliette [100K]

Answer:

Choice A: angle 6 and angle 7

Step-by-step explanation:

The meaning of adjacent angles is they are close to each other. That means they share a common point and share a common side.

3 0

3 years ago

Heyy besties can ya'll please help me with 1 to 4 im really left behind

hram777 [196]

Answer:

1st one: 360

2nd one: 260

3rd one: 210

4th one: 72

Step-by-step explanation:

here are the actual answers since the other person who "answered" is clearly just hungry for points

7 0

3 years ago

Which of the following is a specific species designation

Nutka1998 [239]

Sapien because the word homo in homo sapien is the genus name, while the word sapien is the species name.

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3 years ago

This test is really hard for me in my opinion

pshichka [43]

Answer:13 x 10 (130)Step-by-step explanation:1 1/4 cups of milk make 10 servings. 16 cups make 1 gallon. 1 1/4 + 1 1/4= 2 2/4 + 1 1/4+ 3 3/4 + 1 1/4= 5 + 1 1/4 = 6 1/4 + 1 1/4= 7 2/4 + 1 1/4 + 8 3/4 + 1 1/4 + 10 + 1/4 = 11 1/4 + 1/4 = 12 2/4 + 1 1/4 = 13 3/4 + 1 1/4 = 15 = 1 1/4 = 16 1/4

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3 years ago