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ElenaW [278]
2 years ago
10

A sample of 40 11th graders were asked to select a favorite pattern out of 6 choices. The following display shows what their fav

orite color patterns were. The counts have been recorded in the accompanying table according to pattern and the number of students who chose that pattern.

Mathematics
1 answer:
elena-s [515]2 years ago
3 0

Answer:

C. Graph C

Step-by-step explanation:

To easily find out which graph correctly displays the data from the list and table, note, the frequency of each color that in ascending order.

The color with the highest frequency would have the longest bar, followed by the 2nd highest, then the third, and so on. Thus, frequency should tally with the length of the bar.

From the table given, the top 3 are:

Pink polka dots => 12

Purple => 8

Ted and orange stripes => 7

Green => 6

Blue and gray => 4

Yellow => 3

The graph that has length of bars that corresponds to the frequency of the colors is graph C

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Point C is reflected across the y-axis. Which point represents the reflection? A. Point D B. Point E C. Point G D. Point M
lesya [120]

Answer:

point d

Step-by-step explanation:

education 2020 -.-

8 0
3 years ago
Please help! I don't understand how to solve this problem
Ilia_Sergeevich [38]

Using the z-distribution, a sample of 142,282 should be taken, which is not practical as it is too large of a sample.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm z\frac{\sigma}{\sqrt{n}}

The margin of error is:

M = z\frac{\sigma}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • z is the critical value.
  • n is the sample size.
  • \sigma is the standard deviation for the population.

Assuming an uniform distribution, the standard deviation is given by:

S = \sqrt{\frac{(4 - 0)^2}{12}} = 1.1547

In this problem, we have a 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

The sample size is found solving for n when the margin of error is of M = 0.006, hence:

M = z\frac{\sigma}{\sqrt{n}}

0.006 = 1.96\frac{1.1547}{\sqrt{n}}

0.006\sqrt{n} = 1.96 \times 1.1547

\sqrt{n} = \frac{1.96 \times 1.1547}{0.006}

(\sqrt{n})^2 = \left(\frac{1.96 \times 1.1547}{0.006}\right)^2

n =  142,282.

A sample of 142,282 should be taken, which is not practical as it is too large of a sample.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

8 0
1 year ago
Paisley's car used 11 gallons to travel 374 miles. How many gallons of gas would she need to travel 442 miles?
katen-ka-za [31]

Answer:

13 gallons

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please i need help i’ll give u a brainliest please
Nina [5.8K]

Answer:

V=314.15

Step-by-step explanation:

V=1/3pi*r^2*h

V=1/3*pi*5^2*12

V=1/3pi*25*12

V=1/3pi*300

V=300/3pi

V=100pi

V=314.15

4 0
2 years ago
I NEED HELP PLEASE ! :)
dedylja [7]

We can write a proportion to resemble the problem;

AE/ED = AB/BC

AE = 9

ED = 6

AB = x

BC = 10

Substitute with the given values.

9/6 = x/10

9/6 * 10 = x/10 * 10

90/6 = x

15 = x

Therefore, the answer is 15.

Best of Luck!

7 0
3 years ago
Read 2 more answers
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