Question

For a binomial distribution with n-289 and p-0.9, determine the mean and standard deviation you would use when appraimating probabilities with a normal distribution. Ou= 260.1 and o-5.1 Ou- 260.1 and o = 26.01 Ou- 28.9 and o =5.1 O - 260.1 and o =16.128 Ou- 28.9 and o-5.376 Ou- 28.9 and o- 26.01 Question 8 1 pts According to The National Institute for Occupational Safety and Health, 40% of all workers say their job is "very or extremely stressful".If 216 workers are randomly selected, what is the probability that exactly 80 say that their job is very stressful? O 4443 O 1685 O 2061 O 1867 0274

Answer 1

Question for a binomial distribution with n=289 and p=0.9 determine the mean and standored deviction you would use whem approximating prababilities with a normal distributon Answon Map o. supa a=1-P M = 289 x 0.9 and r= 289xo Gol = 2603 = 126.01 M=960.1 = 5.1 Queston 1, According to the National institute for occupational sofety and Health, 40% of all workings soy their jobs is very streetful 216 wwoter are random selected, whef is the probability that exactly so say that job as very stressful? since n is very lorge so we use find that pocobability by approvination marin normal detal' buten Arsuar mean x - up srpq and we that in continues cose sind will be o. probchiety of a point

Herre probability of that exactly 80 soy stress that their job is very stressful will be o. and option is correct.