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topjm [15]
3 years ago
13

A library association plans to take an SRS of 150150150 adults from the population of adults in the US to see what proportion of

adults sampled believe that public libraries help them learn new things. Suppose that 76\vv, percent of adults in the US believe that public libraries help them learn new things. What are the mean and standard deviation of the sampling distribution of the proportion of US adults who believe that public libraries help them learn new things
Mathematics
1 answer:
Serga [27]3 years ago
3 0

Answer:

Mean: =0.76

SD= (squarerootof) 0.76(0.24)/150

Step-by-step explanation:

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11. Make Sense and Persevere The sum of four
marusya05 [52]

Answer:

-3

Step-by-step explanation:

4n+ 6 = -18

4n=-24

n = -6

-6,-5,-4,-3

largest is -3

8 0
3 years ago
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A toy store's percent of markup is 40%.A model train costs the store $90. Find the markup
slavikrds [6]

All you have to do is find 40% or .4 of 90.

90 x .4 = 36

36$ is the mark up, so the total price would be 126$.

8 0
3 years ago
Mrs. cugini collected data on the hand span length and height of each of her Algebra 1 students.
dem82 [27]
<h3>a. slope = \displaystyle m=\frac{15}{2}</h3><h3>b. slope = m = positive = positive correlation =  two sets of data increase together</h3><h3>Further explanation</h3>

Scatter plot shows the relationship between data

We can use Regression to make lines on the chart or you can also make lines with the principle as close as possible to all points

Regression

\displaystyle m=\frac{N\sum (xy)-\sum x\sum y }{ N\sum (x^2)-(\sum x)^2}

Because data is in the form of numbers from the hand span length and height of each of students. not displayed clearly, then we make a line directly by making points on the graph above and below the line as much as possible to be balanced

We specify 2 points that are crossed by a line, for example:

(6.45) and (8.60)

slope (m) = change in y / change in x

\displaystyle m=\frac{60-45}{8-6}\\\\m=\frac{15}{2}

Slope has a positive value, and shows a positive correlation where the tendency of the number rises simultaneously, or can be concluded:

<em>tall students will have the long hand span length too</em>

<h3>Learn more</h3>

Line equation

brainly.com/question/10955762

Keywords : line equation, slope, regression, the hand span length and height, graph, Scatter plot

#LearnWithBrainly

7 0
4 years ago
Simplify -3(x+3)+5(4x+6)
Zina [86]

Answer:

17x +21

Step-by-step explanation:

-3(x+3)+5(4x+6)

Distribute

-3x-9+20x+30

Combine like terms

17x +21

3 0
3 years ago
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Two angles are supplementary. The measure of one angle is 4 more than 7 times the other angle. Find the measures of both angles.
mylen [45]

Answer:

<u>The smaller angle measures 44° and the larger measures 136°</u>

Step-by-step explanation:

Smaller angle = x

Larger angle = 3x + 4

Therefore, we have:

x + 3x + 4 = 180

4x = 180 - 4

4x = 176

x = 176/4

x = 44 ⇒ 3x + 4 = 136

The smaller angle measures 44° and the larger measures 136°

<u>Can I get a brainliest plz?</u>

6 0
4 years ago
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