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dezoksy [38]
3 years ago
8

Sndnfnfndbsnsnsndndnfnfnnfnfnfndnsnzbzbxbzbbsbsbsbdjdjfjfkgkfkgkkvk k

Mathematics
2 answers:
leva [86]3 years ago
8 0

Answer:

Thanks!

Step-by-step explanation:

I needed some points.

Arturiano [62]3 years ago
4 0
1246678956)7t fhiuxdc
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Choose the equation for the graph below
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A sample with a mean of m = 40 and a variance of s2 = 20 has an estimated standard error of 1 point. how many scores are in the
tamaranim1 [39]

The correct option is 20.

The score found for the sample is 20.

<h3>What is Standard error?</h3>

A standard error is a statistic that is applied to test the distribution of data. This metric is comparable to standard deviation. We can calculate the standard error if we know the sample size & standard deviation. It assesses the mean's precision.

Now, according to the question;

Sample mean; \bar{x}=40

Sample variance; s^{2}=20

Thus, s=\sqrt{20}=4.47

Standard error SE = 1

The amount of scores with in sample must be determined here.

The standard error formula is as follows:

S E=\frac{s}{\sqrt{n}}

We might rearrange the formula as follows:

\begin{aligned}\sqrt{n} &=\frac{s}{S E} \\n &=\left(\frac{s}{S E}\right)^{2}\end{aligned}

Substituting the values;

\begin{aligned}&n=\left(\frac{4.47}{1}\right)^{2} \\&n=19.98\end{aligned}

The sample's number of scores n = 19.98 = 20 (round up)

Therefore, the scores are in the sample is 20.

To know more about the Standard error, here

brainly.com/question/14467769

#SPJ4

3 0
2 years ago
Please help I’m giving extra points
jok3333 [9.3K]

Answer:

45

Step-by-step explanation:

4 0
2 years ago
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13. Mr. Carmello drives 30 miles each
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Answer:

240 miles

Step-by-step explanation:

he drives 30 miles there and back which is 60 miles and 6 times 4 is 24 so 60 times 4 is 240

8 0
3 years ago
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