Ask Question
MathematicsMathematics
13 March, 09:36

Mrs. Jones surveys her class of 20 students about their siblings. In the class, 15 have a brother, 16 have a sister, and 12 have both a brother and a sister. What is the probability that a student has a brother OR a sister?

+1
Answers (2)
  1. 13 March, 09:49
    0
    P (Brother or Sister) =.75 +.82 -.65 P (Brother or Sister) =.92 = 92% The reason you subtract the. 65 is that scenario does not fit the rule. The rule is the probability of having a brother OR a sister. The. 65 represents the kids who have both not either.
  2. 13 March, 10:01
    0
    About 10 % of people might have a brother or sister
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Mrs. Jones surveys her class of 20 students about their siblings. In the class, 15 have a brother, 16 have a sister, and 12 have both a ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
What is equivalent to the complex number i^7
Answers (1)
You wish to determine the effectiveness of taking Omega-3 tablets to lower a person's cholesterol. To determine this, you collect data on the cholesterol level of 50 individuals before and after a 6-week course of Omega-3 tablets.
Answers (1)
An office building casts a shadow that is 55 m long. At the exact same time, a 5 m tree casts a shadow that is 1.1 m long. Use similar triangle ratios, to calculate the height of the office building.
Answers (1)
Each week, Rosario drives to an ice skating rink that is 120 miles away. The round-trip takes 2.75 hours.
Answers (2)
How to know if graph is a function
Answers (1)
New Questions in Mathematics
Area of a 40cm semicircle
Answers (1)
A cylinder has a diameter of 14 centimeters and a volume of 112π cubic centimeters. What is the height in centimeters of the cylinder?
Answers (1)
Which of the following is a cause of inflation? a. consumers growing apathetic and failing to notice attempts to raise prices b. demand continually exceeding supply, leading to an imbalance of money and goods in the market c.
Answers (2)
Hermosa Menendez is employed by Chemical Industries. She has a family membership in the group preferred provider organization (PPO). The annual premium is $6,180. Her employer pays 75 percent of the premium.
Answers (1)
Max accidently mixed 56 turnip seeds with 78 cabbage seeds. Since the two seeds look nearly identical, he must now choose one randomly to plant. Which of the following is the probability he will choose a turnip seed? A) 0.42 B) 0.56 C) 0.58 D) 0.72
Answers (1)
Home » Mathematics » Mrs. Jones surveys her class of 20 students about their siblings. In the class, 15 have a brother, 16 have a sister, and 12 have both a brother and a sister. What is the probability that a student has a brother OR a sister?
Sign Up Forgot Password?