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.
Put 16 where n is, then do the arithmetic.
... a(16) = -6 + 3(16 -1)
... a(16) = -6 + 45
... a(16) = 39
#420
because 70x4=420 within 300 and 500 and is greater than 400 which is a multiple of 100
Answer:
1. always true
2. always true
3. sometimes true
4. always true
5. never true
Step-by-step explanation:
