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AlexFokin [52]
3 years ago
5

There is a margin of error on a food survey of +/– 5%. What is the range of the number of students who do not want hot dogs if 8

3 of 127 students said they did not want hot dogs on Wednesdays and there are 900 students at the school? A. 529 to 617 students B. 559 to 647 students C. 559 to 617 students D. 559 to 600 students
Mathematics
2 answers:
dangina [55]3 years ago
8 0
83/127 = x/900
127x = 74700
x = 74700/127
x = 588.1 rounds to 588

588 - 0.05(588) = 558.6 rounds to 559
588 + 0.05(588) = 617.4 rounds to 617

range is C. 559 to 617


scoray [572]3 years ago
5 0

Answer:

Your answer would be C. 559 to 617 students hopefully this helps!

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On the graph of the equation X-4Y= -16 what is the value of the Y-intercept?
Nonamiya [84]

we can always find the x-intercept by simply settting y = 0, and solving for "x".

and we can always find the y-intercept by simply setting x = 0 and solving for "y".


\bf x-4y=-16\implies \stackrel{x=0}{0-4y=-16}\implies y=\cfrac{-16}{-4}\implies y=4
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
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8 0
3 years ago
. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person
bulgar [2K]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or greater

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 100, \sigma = 5

What is the probability that a person selected at random will have an IQ of 110 or greater?

This is 1 subtracted by the pvalue of Z when X = 110. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{110 - 100}{5}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% probability that a person selected at random will have an IQ of 110 or greater

5 0
3 years ago
I will give brainliest
alina1380 [7]

Answer:

3532.5

Step-by-step explanation:

The formula for the volume of a cylinder is 3.14 times R^2 times H

I calculated it

5 0
2 years ago
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statuscvo [17]

Answer:

395149.22 cubic inches.

Step-by-step explanation:

The volume of a tank with length (L), width (W) and height (H) is given by

V = LWH ........ (1)

Now, the interior dimensions of a tank are 82.5 inches long, 58.5  inches wide, and 81.875 inches tall.

So, L = 82.5 inches, W = 58.5 inches and H = 81.875 inches.

Therefore, V = (82.5 × 58.5 × 81.875) = 395149.22 cubic inches.

Hence, the approximate volume of the tank is 395149.22 cubic inches. (Answer)

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3 years ago
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Answer:

23,163,099.42857

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7 0
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