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motikmotik
3 years ago
9

The school marching band has 36 members. the band director wants to arrange the band members into a square formation. how many b

and members should be in each row?
a. 8b. 6c. 5d. 4
Mathematics
1 answer:
MAXImum [283]3 years ago
6 0
The answer is 6 because 6x6 = 36

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1. A luge race is very dangerous, and a crash can cause serious injuries. The league requires anyone who has a crash to have a t
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Answer:

0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

Step-by-step explanation:

For each race, there are only two possible outcomes. Either the person has a crash, or the person does not. The probability of having a crash during a race is independent of whether there was a crash in any other race. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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

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P(X \geq 1) = 1 - P(X = 0)

When n = 30

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

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P(X \geq 1) = 1 - P(X = 0) = 1 - 0.2939 = 0.7061

0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

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2 years ago
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