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laila [671]
2 years ago
7

HELP ME ASAP!!!!!!!!!

Mathematics
1 answer:
Arte-miy333 [17]2 years ago
6 0

Hello, please do not cheat on classwork on brainly, as this is against the honor code. Please do not continue this activity.

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In a certain city district the need for money to buy drugs is stated as the reason for 70% of all thefts. Find the probability t
torisob [31]

Answer:

9.72% probability that among the next 7 theft cases reported in this district, exactly 3 of them resulted from the need to buy drugs.

Step-by-step explanation:

For each theft, there are only two possible outcomes. Either the need to buy drugs is the reason of the theft, or it is not. Each theft is independent of each other. So we use the binomial probability distribution 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}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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

And p is the probability of X happening.

In a certain city district the need for money to buy drugs is stated as the reason for 70% of all thefts.

This means that p = 0.7

Find the probability that among the next 7 theft cases reported in this district, exactly 3 of them resulted from the need to buy drugs.

This is P(X = 3) when n = 7. So

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

P(X = 3) = C_{7,3}.(0.7)^{3}.(0.3)^{4} = 0.0972

9.72% probability that among the next 7 theft cases reported in this district, exactly 3 of them resulted from the need to buy drugs.

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2 years ago
Amid needs 32.9 meters of fabric to make one tent. he has an order for 12 tents. how many meters of fabric does he need? a. 367.
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Answer: 394.8

Step-by-step explanation:

if Amid needs 32.9 m for one tent  he will need

32.9 x 12= 394.8 m for 12 tents

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271403 rounded to the nearest ten thousand
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Answer:

271,403 is rounded to 270,000 because the 1403 before it is less than 5000, 4 and below drop it down, 5 or more bump it up.

Step-by-step explanation:

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If Kiontre reads 100 pages in 5 days, how many pages does he read in 1 day?
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Answer: 20 pages

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