week 3

 

A) p(a) 30/90 or 1/3       

 P(b)  30/90 or 1/3

P(a or b) 6/9 – 1/9 so 5/9

Not the same



B) answer is True

                because P(A1|B) = .11

 Chance of rain is very low.




> p=dbinom(0,size=10,prob=.2);p
[1] 0.1073742


Screenshots were not working properly for some reason. so I just copied the code results



Comments

Post a Comment

Popular posts from this blog

Image
  A. Consider a population consisting of the following values, which represents the number of ice cream purchases during the academic year for each of the five housemates. 8, 14, 16, 10, 11 a. Compute the mean of this population.  11.8 b. Select a random sample of size 2 out of the five members.  8 and 14 c. Compute the mean and standard deviation of your sample.  11 d. Compare the Mean and Standard deviation of your sample to the entire population of this set (8,14, 16, 10, 11). Mean of sample is less then mean of population. standard deviation is smaller as well.  Suppose that the sample size  n  = 100 and the population proportion  p  = 0.95. Does the sample proportion  p  have approximately a normal distribution? yes Since p = .95, q = .05.  p * n = .95 * 100 = 95 q * n = .05 * 100 = 5 What is the smallest value of  n  for which the sampling distribution of  p  is approximately normal?   6 beca...
Read more