The Northside rifle team has two markspersons, Dick and Sally. Dick hits a bull’s-eye 90% of the time, and Sally hits a bull’s-eye 95% of the time. What is the probability that either Dick or Sally or both will hit the bull’s-eye if each takes one shot? What is the probability that Dick and Sally will both hit the bull’s-eye?

The Northside rifle team has two markspersons, Dick and Sally. Dick hits a bull’s-eye 90% of the time, and Sally hits a bull’s-eye 95% of the time. What is the probability that either Dick or Sally or both will hit the bull’s-eye if each takes one shot? What is the probability that Dick and Sally will both hit the bull’s-eye?

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 researcher finds that the odds of catching a grouper on a fishing expedition are 3:1. Find the probability of catching a grouper on two consecutive trips.
Suppose 33.3% of high school students eat pizza and 42% drink soda. If 17.3% of high school students eat pizza and drink soda, what is the probability that a randomly chosen high student will either eat pizza, drink soda, or both?
Q: If 5% of the people are carriers of a certain disease and 10% of them are young, what is the probability that the young person will be a carrier? For disease if we know that young people make up 20% of the population?
A baseball player has a batting average of .211 (in other words, he gets a hit 21.1 % of the time that he goes up to bat). If he goes up to bat 13 times, what is the probability that he will get exactly 4 hits?
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4 . A sample of 41 U.S. adults is chosen. A new sample of 65 adults is drawn. Find the probability that more than 38% of the people in this sample have high blood pressure. The probability that more than 38% of the people in this sample have high blood pressure is
If you have a sample of 100 patients at a hospital and 20 of them have the flu, what is the probability Of randomly selecting 3 patients in a row who have the flue?
Only Typed Answer
Helen plays basketball. Helen must now attempt two free throws. C = the event that Helen succeeds on the first shot with P(C) = 0.50. D = the event Helen succeeds on the second shot with P(D)= 0.50. The probability that Helen succeeds on the second shot given that she succeeds on the first one is 0.63. What is the probability that Helen succeeds in both shots?
In a game of yahtzee, you roll 5 dice each turn. what is the probability that on one turn exactly two dice end up with the value 3?
You select a family with three children. If M represents a male child and F a female child, the second of equally likely outcomes for the children’s genders is shown below. Find the probability of selecting a family with at least two male children.{MMM,MMF,MFM, MFF,FMM,FMF,FFM,FFF}
Rodney is going to shoot a total of 9 free-throws to prove he is a better shooter than Chris. During warm-ups Rodney can make 57% of practice shots. The challenge results are as follows… • 9 hits Rodney wins $100 • 6-8 hits Rodney wins $25 • 4-5 No one wins • 0-3 hits Chris wins $15 What is the probability that Rodney makes 7 shot?
A company receives 30% of its shipments from source A and the rest from source B. For source A, the defective rate is 10% and for source B, the defective rate is 6%. The company just receives a shipment which contains 10 items.Determine the probability that there will be one defective item.