242.97561 and to check it just multiply 242.97561 times 41,and if it equals 9962 then it's correct;)
1st one I would guess survey 2nd the answer is 64
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.
Answer:
30
Step-by-step explanation:
