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MA_775_DIABLO [31]

3 years ago

10

Please help with letter b.

1 answer:

Sergeu [11.5K]3 years ago

5 0

Around 58%. It is safe to believe that about the same percentage of students in the school have pets. This is because they are split in groups of 10 and they can be represented as part of a whole, in this case the surveyed students are part and the whole school is the school.

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Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest t

vitfil [10]

Answer: The mean of the data is 433.75, variance of the data is 99667.19 and the standard deviation of the data is 315.7011.

Explanation:

The given data is 900, 35, 500 and 300.

The number of observation is 4.

Formula of mean is,

$\text{Mean}=\frac{\text{Sum of observations}}{\text{Number of observations}}$

$\bar{X}=\frac{900+35+50+300}{4} =433.75$

The formula of variance is given below,

$\sigma^2=\frac{1}{n}\sum{(X-\bar{X})^2}$

$\sigma^2=\frac{398668.75}{4}$

$\sigma^2=99667.19$

The variance of the data is 99667.19

$\sigma=\sqrt{99667.19}$

$\sigma=315.7011$

The standard deviation of the data is 315.7011.

The other information or values of given chart is shown in the attached table.

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netineya [11]

Answer:

Supplementary

Step-by-step explanation:

135+45 =180

So Option C

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Nostrana [21]

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AysviL [449]

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Lera25 [3.4K]

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top one

Step-by-step explanation:

i got it right :)

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