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laila [671]
3 years ago
8

Help Please.. Question in the file.

Mathematics
1 answer:
Romashka [77]3 years ago
4 0
How do I answer them

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If the radius of a circle is 3.5 what is the diameter
castortr0y [4]
Radius is half of the diameter so it's 7 for the diameter.
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Ann rolls a 6 sided number cube and then chooses a card from a set numbered 1 through 9. What is the probability that she will r
Licemer1 [7]
5/9 to chose odd card, 3/6 to roll even number
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2 numbers total 47 and have a difference of 21 what are the two numbers
murzikaleks [220]

x+y = 47

x-y = 21

------------  add together

2x =68  divide by 2

x=34

x+y = 47

34+ y = 47

subtract 34 from each side

y = 13

the two numbers are 34 and 13


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3 years ago
100 POINTS URGENT PLEASE HELP
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<u>Domain</u><u>~</u><u> </u>

0 \leqslant b \leqslant 300

<u>Range</u><u>~</u><u> </u>

<u>0 \leqslant p \leqslant 225</u>

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2 years ago
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Determine the probability of selecting a two-child family with one boy and one girl assuming boys and girls are equally likely
Fittoniya [83]

Using the binomial distribution, it is found that there is a 0.5 = 50% probability of selecting a two-child family with one boy and one girl.

For each child, there are only two possible outcomes, either it is a boy, or it is a girl. The probability of a child being a boy or being a girl is independent of any other child, which means that the binomial distribution is used to solve this question.

Binomial probability distribution

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem:

  • Two children, hence n = 2.
  • Equally as likely to be a boy or a girl, hence p = 0.5.

The probability of one of each is P(X = 1), hence:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{2,1}.(0.5)^{1}.(0.5)^{1} = 0.5

0.5 = 50% probability of selecting a two-child family with one boy and one girl.

A similar problem is given at brainly.com/question/24863377

3 0
2 years ago
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