3 years ago

ANSWER FAST WILL MARK BRAINLIEST IF RIGHT HURRY

Mathematics

1 answer:

goblinko [34]3 years ago

4 0

Answer:

The answer is first one.

Step-by-step explanation:

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A pediatrician has administered a flu vaccine to 1,000 children in a local community. The average number of children who contrac

White raven [17]

Answer:

1.83%

Step-by-step explanation:

For the expected value of 4 cases per 1000 children. We can use a formula for Poisson distribution to calculate the probability that none of the 1000 students would contract the flu:

$P(X = 0) = \frac{\lambda^ke^{-\lambda}}{k!}$

$P(X = 0) = \frac{4^0 e^{-4}}{0!}$

$P(X = 0) = \frac{1}{e^4} = 0.0183$

So the probability of this to happens is 1.83%

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4 years ago

7. Ned took a test with 25 questions. He lost 4

Alenkinab [10]

84 points lost overall

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4 years ago

A number cube is rolled. What is the probability that it will land on a 2 or a 5?

Bezzdna [24]

A cube has 6 sides. 2 and 5 are numbers on 2 of the cube's sides. The probability is therefore 2/6 which simplifies to 1/3 or ~33.3%

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4 years ago

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Together Carla and Yvette drove from New York City to San Diego. The 2808 mile trip took them two weeks. Each week, they took on

Likurg_2 [28]

Answer:

234 miles a day

Step-by-step explanation:

The whole trip was for 2 weeks (7*2=14 days).

Since 1 day from each week they took rest, they drove for (14-2(1)=12 days) 12 days.

So a total of 2808 for 12 days. The average is 2808 divided by 12 days:

$\frac{2808}{12}=234$

The answer is 234 miles a day

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3 years ago

X2-3x-10=0 jdhdhshsgddhsvsgdhdvs

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Answer:

C) (2,-5)

Step-by-step explanation:

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4 years ago