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melisa1 [442]
2 years ago
13

There are 24 students in a class, and three of them are named Madison. There are no other students in the class with the same na

me.
If the teacher calls on students randomly, which of the following BEST describes the probability of a Madison being chosen?

If you cannot see, zoom in on the photo.

Do not answer if you don’t know the answer.
Whoever answers correctly will get Brainliest!

Mathematics
2 answers:
Katena32 [7]2 years ago
6 0

Answer:

Mizuki is here to help! The answer is D!

Step-by-step explanation:

Ok... So there are 24 students in the class and no other students in the class has the same name right? So the fraction should be \frac{3}{24} since there are three madisons, which will be 0.125!

Since three people have the same name, everyone else gets less probability of getting called so the answer would be D.

sweet [91]2 years ago
5 0

Answer:

Option D

Step-by-step explanation:

Total Students in a class: 24

Total Madisons in the class: 3

Denominator is always the total number of something so; \frac{3}{24}

3/24 = 0.125

Any other student would have a probability of \frac{1}{24} of being chosen which is less than \frac{3}{24}, therefore, Option D is the most sensible one.

Hope this helps!

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Answer:

\bar x = 260.1615

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The confidence interval of standard deviation is: 53.76 to 103.25

Step-by-step explanation:

Given

n =20

See attachment for the formatted data

Solving (a): The mean

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x = \frac{242.87 +212.00 +260.93 +284.08 +194.19 +139.16 +260.76 +436.72 +355.36 +.....+250.61}{20}

\bar x = \frac{5203.23}{20}

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\bar x = 260.16

Solving (b): The standard deviation

This is calculated as:

\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}

\sigma = \sqrt{\frac{(242.87 - 260.1615)^2 +(212.00- 260.1615)^2+(260.93- 260.1615)^2+(284.08- 260.1615)^2+.....+(250.61- 260.1615)^2}{20 - 1}}\sigma = \sqrt{\frac{94938.80}{19}}

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We have:

c =0.95

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Answer:

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Problem C.

One angle is marked a right angle, so its measure is 90 deg.

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Answer:

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3 years ago
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