Surgery has a success rate of 80% . suppose that the surgery is performed and 3 patients . A)what is the probability the surgery is successful in exactly 2 patients? B)what is the probability of getting success in less than 2 patients? C)on average, how many surgeries we expect to be successful? D)what is the standard deviation of numbers of successful surgeries?

Surgery has a success rate of 80% . suppose that the surgery is performed and 3 patients . A)what is the probability the surgery is successful in exactly 2 patients? B)what is the probability of getting success in less than 2 patients? C)on average, how many surgeries we expect to be successful? D)what is the standard deviation of numbers of successful surgeries?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A basketball player makes 70% of the free throws he shoots. Suppose that he tries 15 free throws. a)What is the probability that he will make more than 7 throws? b)How many baskets can the player expect to make if he takes 15 shots? c)What is the standard deviation of the number of successful free throws out of 15 total?
None
Suppose you sample one value from a uniform distribution with a = 0 and b = 20. a) What is the probability that the value will be between 13 and 19? b) What is the probability that the value will be between 4 and 9? c) What is the mean? d) What is the standard deviation?
The length of human pregnancies from conception to birth is approximately Normal with mean 266 days and standard deviation of 16 days. The probability that the average pregnancy length for six randomly chosen women exceeds 270 days is about:
Please answer all parts. Thank you!
The average grade of Grade 11 students in Statistics and Probability is 85 with a standard deviation of 1.5 Solve for the probability of the following: a) The average grade is less than 88 b) The average grade is more than 88 c) The average is less than 82
according to a recent poll, 95% of millenials (people born between 1981 and 1995) have a profile on a social networking site. Let X = the number of millenials you ask until you find a person without a profile on a social networking site. A) Find the mean and standard deviation of X. B)What is the probability that you must ask ten people to find one person without a social networking site? C) What is the probability that you must ask 20 people to find one person without a social networking site? D) What is the probability that you must ask at most five people?
hello I need answers to 3a,3b,3c please and thank you!
Average in one day in a large hospital30 patients die. a) Probability distribution, expected value, variance of the number of patients who died in a daywrite.b) The probability distribution, expected value, variance of the number of patients who died in five days.write. Find the probability that the number of patients who died in five days is 120.
Sociologist say that 90% of married women dislike their husband's mother . Suppose 6 married women are having coffee together one morning. What is the probability that