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3 years ago

Does the relation y=x^2-1 defines y as a function of x

Mathematics

2 answers:

Reil [10]3 years ago

7 0

Answer:

Yes.

From Definition - A special relationship where each input has a single output.

Check if there is going to be one y for one x.

Step-by-step explanation:

Re-write it in terms of y=…., meaning solve for y
If it looks like you have two equations then it is a relationship -case a
If you need to prove that one has a function for case b, you would point out that if you substitute any value you will get some value in Reals.

USPshnik [31]3 years ago

4 0

Answer:

yes. this relation DOES define y as a function of x

Step-by-step explanation:

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Part b) :

Based upon a sample of 450 complaints, what is the probability that the sample proportion will be within .04 of the population proportion (to 4 decimals)?

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Part C:

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Therefore, the sampling distribution has a proportion of 0.75 and a standard error of 0.0306.

Part D):

Based upon the smaller sample of only 200 complaints, what is the probability that the sample proportion will be within .04 of the population proportion (to 4 decimals)?


The probability that the sample proportion will be within 0.04 of the population proportion is given by:

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Therefore, the probability that the sample proportion will be within .04 of the population proportion is 0.8086.

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Answer:

Hence, the probability of randomly rolling 2 standard dice and having a sum that is EVEN or GREATER THAN 9 is 2/3

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Let A be the event that the sum of two dice is even

Then P(A) will be the probability of having even sum

As the sample space is already given in the image

n(S) = 36

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n(A) = 18

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P(A) = n(A)/n(S)

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B = {(4,6), (5,5), (5,6), (6,4), (6,5), (6,6)}

n(B) = 6

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P(A∪B) = P(A) + P(B)

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