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

a) compute the mean and standard deviation of the random variable x, the number of smokers who started before 18 in 100 trials of the probability experiment.

b) interpret the mean.

c)would it be unusual to observe 80 smokers who started smoking before turning 18 years old in a random sample of 100 adult smokers? why?

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is symmetric about the line y = 120,000.

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.

hello,

as we don't know if g(x) is continue,

answer b

f(x)=2x²-8x+1=2(x²-4x+4)+1-8=2(x-2)²-7

vertex is (2,-7) ( a minimum since coefficient of x² is > 0)