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Gnom [1K]
3 years ago
13

You randomly sample 5 people in your​ school, and none of them is a vegetarian. Does this mean that the probability of being a v

egetarian for students at your school equals​ 0? Explain. Choose the correct answer below. A. Yes. Since no vegetarians were found during the​ survey, the probability is 0. If at a later point students who are vegetarian are​ found, this will increase the probability. B. No. In the short​ run, the proportion of a given outcome can fluctuate a lot. As more people are​ sampled, the proportion should approach the real probability. C. No. Probability is​ subjective, so if you​ (the surveyor) decide the probability should be greater than​ 0, then you can make it that way.
Mathematics
1 answer:
kap26 [50]3 years ago
7 0

Answer:

B.

Step-by-step explanation:

The sample size taken for the school is too small.

5 people not being vegetarian does not mean NO OTHER students are vegetarian also. Thus, an assumption based on this probability of 5 people would not be correct unless fully supported. This makes option A wrong.

Answer B is correct because with small numbers, probability varies a lot and may change drastically with the addition of data.

For example: the 6th person we sample says he/she is a vegetarian.

This would change the probability drastically to 1/6 = 0.1667

Because this is a drastic change, and fluctuation is clear, answer B is correct.

C is wrong because probability is not subjective.

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A.(-1,6)<br> B.(-6,5)<br> C.(-8,1)<br> D.(-10,1)<br><br> HELP ASAP‼️‼️
Evgen [1.6K]

Answer:

the answer is b

Step-by-step explanation:

I did this last year and got them right

3 0
3 years ago
In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi
lana [24]

Answer:

Confidence interval:  (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

\bar{x} = 1858 \text{ kWh}

Population standard deviation =

\sigma = 450 \text{ kilowatt-hours}

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96

1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)

6 0
3 years ago
Which equation represents the standard form of the equation y= (x + 3)² - 4?
lilavasa [31]

Answer:

The answer is B. y = x^2 + 6x + 5

Step-by-step explanation:

Because y = (x + 3)^2 - 4 = x^2 + 6x + 9 - 4 = x^2 + 6x + 5

So the answer in this question is B.

4 0
2 years ago
Light can _______ with matter in a variety of ways.​
Masteriza [31]
Provide electricty is the answer because if you use elec
5 0
1 year ago
After two six sided dice are rolled, what is the probability that the dice faces add up to either a 4 or 6?
VladimirAG [237]

Answer:

hope this helps you

option B

Step-by-step explanation:

ecf-zutd-cpt.

8 0
2 years ago
Read 2 more answers
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