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Vadim26 [7]
3 years ago
11

Sont au

Mathematics
1 answer:
Sonbull [250]3 years ago
3 0

Answer:

4

Step-by-step explanation:

5

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An investigator wants to estimate caffeine consumption in high school students. how many students would be required to estimate
astraxan [27]

We can solve this problem by referring to the standard probability distribution tables for z.

We are required to find for the number of samples given the proportion (P = 5% = 0.05) and confidence level of 95%. This would give a value of z equivalent to:

z = 1.96

Since the problem states that it should be within the true proportion then p = 0.5

Now we can find for the sample size using the formula:

n = (z^2) p q /E^2

where,

<span> p = 0.5</span>

q = 1 – p = 0.5

E = estimate of 5% = 0.05

Substituting:

n = (1.96^2) 0.5 * 0.5 / 0.05^2

n = 384.16

<span>Around 385students are required.</span>

6 0
3 years ago
The amount of unexplained variance in a relationship between two variables is called?
ser-zykov [4K]

Answer:

The amount of unexplained variance in a relationship between two variables is called: coefficient of alienation also called coefficient of nondetermination. A positive correlation between two variables would be represented in a scatterplot as. line sloping upwards. .

Step-by-step explanation:

5 0
1 year ago
5 Things people should hear every day by at least one person in there life tell if i'm wrong
Katyanochek1 [597]

Answer:

ty <3333333333333333333333333

5 0
3 years ago
Read 2 more answers
22. Roberto is an advertising sales representative for a magazine. He earns a commission on
liberstina [14]

Answer:

17%

Step-by-step explanation:

12,750/75,000=0.17

Which means it's 17%

Brainliest please-

6 0
3 years ago
A group of 22 students participated in a race. Their scores are below: Score (points) 4–5 6–7 8–9 10–11 12–13 Number of Students
Anna71 [15]
A histogram would best represent the data.
Dot plot is a good way to show a certain trend. However, when it comes to the number of a item, in this case the number of students in a certain score range, a histogram will be the most intuitive and concise. Thus, a histogram best represent the data presented here.
6 0
3 years ago
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