3 years ago

Omg guys get this right pls this is a test and this is most of my grade this question

Mathematics

1 answer:

Kipish [7]3 years ago

5 0

Answer: the Y is 7

Step-by-step explanation:

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According to the text, which is not a main component of drawing?

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4 years ago

Can somebody help me do this?

saveliy_v [14]

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3 years ago

The number of people in a car that crosses a certain bridge is represented by the random variable X, which has a mean value μX =

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Let $Y$ be the total amount of money paid by any given set of passengers. If there are $X$ passengers in a car, then the driver must pay a toll of $Y=0.5X+3$ .

Then $Y$ has first moment (equal to the mean)

$E[Y]=E[0.5X+3]=0.5E[X]+3E[1]=0.5\mu_X+3=\boxed{4.35}$

and second moment

$E[Y^2]=E[0.25X^2+3X+9]=0.25E[X^2]+3E[X]+9E[1]=0.25E[X^2]+3\mu_X+9$

Recall that the variance is the difference between the first two moments:

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3 years ago

What is the value of n! 9×27+2×31-28=n

yKpoI14uk [10]

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