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Dmitry [639]
2 years ago
15

According to an​ almanac, 60% of adult smokers started smoking before turning 18 years old.

Mathematics
1 answer:
dangina [55]2 years ago
4 0
A) mean = np
0.6(200) = 120
SD^2= np(1-p)
SD = sqrt(200(0.6)(1-0.6))
SD = 6.928
B) the mean of binomial distribution in this case is the average number of samples you’ll have to take before you achieve a sample of 200 where 60% of smokers who started smoking before 18.
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If it takes 4 people to get a job done in 20 hours, then in 10 hours, it will take 2 people to complete the same job.
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Burka [1]

Answer:

A

Step-by-step explanation:

y=x+1

=> put y=5

5=x+1

x=5-1

x= 4

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same put y=9

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3 years ago
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Answer:

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Step-by-step explanation:

B) 4.6-3.8= .8

5.4-4.6= .8

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8 0
3 years ago
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