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k0ka [10]
3 years ago
6

Mr. Foley wants to randomly select 3 students for a committee. He used 3 coins to conduct a simulation to predict the probabilit

y that the committee will have at least 2 girls. The results of 16 trials of the simulation are shown below. Let H represent a girl and T represent a boy.
TTH HTH THH HHH
HTT THT THT HHT
HHT THH TTT HTT
HHH HTH TTH HHT
Based on the results of the simulation, what is the probability that the committee Mr. Foley selects will have at LEAST 2 girls?
Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0
The probability is 9/16.

This is because in the simulation, 9 of the results had 2 or 3 girls, and there was a total of 16 choices.
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Answer:

C. 32

Step-by-step explanation:

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8 0
3 years ago
Suppose that prices of recently sold homes in one neighborhood have a mean of $215,000 with a standard deviation of $8900. Using
bonufazy [111]

Answer:

The minimum percentage of recently sold homes with prices between $197,200 and $232,800 is 75%.

Step-by-step explanation:

Chebyshev Theorem

The Chebyshev Theorem can also be applied to non-normal distribution. It states that:

At least 75% of the measures are within 2 standard deviations of the mean.

At least 89% of the measures are within 3 standard deviations of the mean.

An in general terms, the percentage of measures within k standard deviations of the mean is given by 100(1 - \frac{1}{k^{2}}).

In this question:

Mean of $215,000, standard deviation of $8900.

What is the minimum percentage of recently sold homes with prices between $197,200 and $232,800?

215000 - 2*8900 = 197200

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Within 2 standard deviations of the mean, so:

The minimum percentage of recently sold homes with prices between $197,200 and $232,800 is 75%.

4 0
3 years ago
Pls help I will not let me add the screenshot so I'm going to try and explain. so there is a rectangle the top measures 10m and
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5 bags
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Answer:

Pythagorean theorem:

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3 0
3 years ago
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Answer:

a

Step-by-step explanation:

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