It is known that is certain prescription drug produces undesirable side effects in 35% of all patients who use it. among a random sample of eight patients using the drug find the probability that at least three have undesirable side effects

0.4278

Step-by-step explanation:

Binomial probability formula :-

, here P(X) is the probability of getting success in x trials , n is total trials and p is the probability of getting success in each trial.

Given : The probability of  undesirable side effects  = 0.35

Sample size : n=8

The probability that at least three have undesirable side effects will be :-

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m