An experiment consists of four outcomes with P(E1) = .2, P(E2) = ...

[maychende]

An experiment consists of four outcomes with P(E1) = .2, P(E2) = .3, and P(E3) = .4 . The probability of outcome E4 is _____.
 a. .500
  b. .024
  c. .100
  d. .900

Question 2

A sample of 36 patients in a doctor's office showed that they had to wait an average of 45 minutes with a standard deviation of 10 minutes before they could see the doctor. Provide a 90 confidence interval estimate for the average waiting time of all the patients who visit this doctor.

[peilian]

Answer to Question 1

c

Answer to Question 2

42.18 to 47.82 minutes (rounded)

[maychende]

Thank you

[peilian]

No problemo