Independent Probability
a coin is tossed and a six-sided die is rolled. What is the probability of getting a head on the coin and a 6 on the die?
What is 1/12
The probability that a student takes an English class and a math class is 0.084. The probability that a student takes an English class is 0.49. What is the probability that a student takes a math class, given that the student is taking an English class?
What is 0.171
Pizza delivery times at Pizza Time are normally distributed with a mean time of 27 minutes and a standard deviation of 3 minutes. Approximately what percent of pizzas are delivered between 24 and 30 minutes?
What is 68%
A family has two children. What is the probability that the family has two girls?
What is 25%
A teacher gave her class two exams; 60% of the class passed the second exam, but only 48% of the class passed both exams. What percent of those who passed the second exam also passed the first exam?
What is 80%
Adult male heights are normally distributed with a mean of 70 inches and a standard deviation of 3 inches. The average basketball player is 79 inches tall. Approximately what percent of the adult male population is taller than the average basketball player?
What is 0.135%
Jacob’s math teacher gave him a True/False quiz with only four questions. Jacob had to randomly choose true or false for each question. What is the probability that Jacob will win a prize?
What is 25%
A diner has collected data about customer coffee-drinking habits. They have calculated that P(cream) = 0.5, P(sugar) = 0.6, and P(cream or sugar) = 0.7. Determine the P(cream and sugar).
What is 0.4
The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what percent of the trees are between 20 and 30 years old?
What is 78.87%
Susan is picking candy from a bag. There is a 15% chance that she will pick a green candy, a 20% chance that she will pick a blue candy, and a 3% chance that she will pick a green and blue candy. Are the events “green candy” and “blue candy” independent?
What is yes these two events are independent
What is my name?
What is Noah Bindas
A compact disc is designed to last an average of 4 years with a standard deviation of 0.8 years. What is the probability that a CD will last less than 3 years?
What is 10.56%
In a group of 1,500 people, 585 have blood type A, 165 have blood type B, 690 have blood type O, and 60 have blood type AB. What is the probability that a person chosen at random from this group has type B blood?
What is P(B) = 11%
A school requires an entrance exam score that is in the top 3% of the population in order to be accepted. If an entrance exam has a mean of 500 and a standard deviation of 55, what is the minimum qualifying score to be accepted at the school?
What is 603