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love history [14]
3 years ago
10

Can someone do all the work on this pdf i will mark u brainliest

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0

Answer:

1) .65 --> 13/20 --> 65%

2) .14 --> 7/50--> 14%

3) .05 --> 1/20 --> 50%

4) .76 --> 19/25 --> 76%

5) .05

6) C .125

7) B

8) 1/8 --> .125 --> 12.5%

9) do 8 squares and 6 colored --> 6/8 --> .75 --> 75%

Try the rest by yourself ask for help if needed

Step-by-step explanation:

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NEED ALGEBRA HELP!<br><br> Pls help I will do anything :(
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The answer is x= 3,8
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30 random samples of high school students were asked if they played a sport for their high school. Each sample was 20 students.
Ludmilka [50]

Answer:

<em>a. This option is correct</em>

<em>b. This will be true only if we take the </em><em>mode</em><em> as the best representative value </em>

c. <em>This is a correct choice</em>

<em>d. This is not a correct choice</em>

Step-by-step explanation:

<u>Statistics</u>

We are given a dot plot representing 30 random sample proportions of high school students about their sports activities. Based on the data extracted from the plot, we can make some basic conclusions and, less accurately, some predictions.

From the data plot we can see that the following proportions were obtained, along with their absolute frequencies:

0.05 -> 3

0.10 -> 8

0.15 -> 7

0.20 -> 5

0.25 -> 4

0.30 -> 2

Let's select which of the following options are correct

a. A sample proportion of 0.20 means that 4 of 20 high school students responded that they play a sport.

The ratio between the sport playing students to the total of high school students is

\displaystyle \frac{4}{20}=\frac{1}{5}=0.20

Thus, this statement is correct.

b. The best prediction for the proportion of all high school students that play a sport is 0.10.

This will be true only if we take the mode as the best representative value for the whole dataset. Personally, I don't like to trust the mode as a good central tendency result, I'd prefer the mean instead.

c. The mean of the 30 sample proportions calculated to the nearest hundredth is 0.16

Computing the mean of the sample proportions

\displaystyle \bar x=\frac{\sum x_i.f_i}{\sum f_i}

\displaystyle \bar x=\frac{0.00\cdot 1+0.05\cdot 3+0.10\cdot 8+0.15\cdot 7+0.20\cdot 5+0.25\cdot 4+0.30\cdot 2}{1+3+8+7+5+4+2}

\bar x\approx 0.16

<em>This is a correct choice</em>

d. The shape of the sample distribution is fairly symmetrical

We can see the distribution if left-skewed because its peak value is not at the mean value. The mode and the mean are fairly different, thus this choice is not correct

5 0
3 years ago
Read 2 more answers
Hi if you have a 65% grade can a 80% bring it up to a C 70%
erma4kov [3.2K]

Answer:

Ask your Teacher if you are missing any work and if you are do it and do some things for extra credit

Step-by-step explanation:

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Which pair of sentences explains what happens if the wire breaks? A. The wire is part of the electric circuit. The electric curr
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Answer:\ a.The wire is part of the electric circuit. The electric current will not flow if it breaks

Step-by-step explanation:

Hope this helps!

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3 years ago
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