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EastWind [94]
3 years ago
14

"A researcher collects 25 data points that yield a mean of 8.164 and a standard deviation (based on N – 1) of 2.237. What is the

standard error for the distribution of means?"
Mathematics
2 answers:
aleksley [76]3 years ago
6 0

Answer:

Standard error for the distribution of means = 0.4474

Step-by-step explanation:

Standard error for the distribution of means is given as

σₓ = σ/√n

where σ = standard deviation = 2.237

n = sample size = 25

σₓ = (2.237/√25)

σₓ = 0.4474

Hope this Helps!!!

Oxana [17]3 years ago
6 0

Answer:

The standard error for the distribution of means is 0.457.

Step-by-step explanation:

The standard error for the distribution of means is given as sample standard deviation divided by the square root of (N - 1)

sample standard deviation = 2.237

N is sample size = 25

Standard error = 2.237 ÷ sqrt(25 - 1) = 2.237 ÷ sqrt(24) = 2.237 ÷ 4.899 = 0.457

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Which table has a constant of proportionality between y and x of 1/5? (from khan academy)
katovenus [111]

Answer:

C

Step-by-step explanation:

Solve for each choice until you get the answer 1/5.

A.

2 - 4/5

10/5 - 4/5 = 6/5; this is not 1/5

B

8 - 8/5

40/5 - 8/5 = 32/5; this is not 1/5

C

3 - 16/5

15/5 - 16/5 = -1/5

5 - 26/5

25/5 - 26/5 = -1/5

7 - 36/5

35/5 - 36/5 = -1/5; although this is negative, it still has the same proportionality of 1/5

6 0
3 years ago
A cone has a height of 8.4 centimeters and a base with a radius of 5.2 centimeters. what is the volume of the cone??
wlad13 [49]
<span>Cone Volume = (<span>π<span> • r² •<span> h) ÷ 3

</span></span></span></span>
<span>Cone Volume = (<span>π<span> • (5.2)² •<span> 8.4) ÷ 3

</span></span></span></span><span><span><span><span>Cone Volume = (3.14159 * </span>27.04 * 8.4) / 3</span> </span> </span>

<span><span><span><span>Cone Volume = </span>237.85606208 </span> </span> </span>


3 0
3 years ago
A population of ants triples every week. If the population starts at 7, how many ants will there be after 7 weeks?
Harrizon [31]

Answer:

147 ants

Step-by-step explanation:

7 times 3=21 21 times 7= 147

6 0
3 years ago
Read 2 more answers
In a survey, 36% of the students said that they kept an electronic diary. There were 900 students who kept an electronic diary.
Rasek [7]
The answer is 25000.
4 0
3 years ago
What is the common ratio of 2, 10/3, 50/9
mojhsa [17]

The common ratio of 2, 10/3, 50/9 is \frac{10}{6}

<u>Solution:</u>

Given, series of elements are 2, \frac{10}{3}, \frac{50}{9}

We have to find the common ratio of the above given series.

We know that, common ratio of an G.P is division of any number in that series with the previous number of the series.

So, now take \frac{10}{3} and 2

\text { Then, common ratio }=\frac{\frac{10}{3}}{2}

\begin{array}{l}{\text { Common ratio }=\frac{10}{3} \times \frac{1}{2}} \\\\ {\text { Common ratio }=\frac{10}{3 \times 2}=\frac{10}{6}}\end{array}

Hence, the common ratio of the given series is \frac{10}{6}

6 0
3 years ago
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