Math Mod Unit 5 Lesson 9
Four friends decide to buy lottery tickets because they read a sign that said "1 in 3.54 tickets is a winner." What is the probability that none of them will win?
0.27
Four friends decide to buy lottery tickets because they read a sign that said "1 in 3.54 tickets is a winner." What is the probability that one of the four friends will win?
0.42
A spinner with 5 equal spaces with the letters A, B, C, D, and E on them is spun 10 times and a vowel comes up each time. What is the probability of that occurring?
1.05 x 10^-4
A die is rolled 10 times. The number 5 comes up 5 times. What is the probability of that happening?
0.01
The one-year survival rate for pancreatic cancer is 20%. Of 12 people diagnosed with pancreatic cancer at one hospital, 6 survived one year. What is the probability of that happening?
0.02
Four friends decide to buy lottery tickets because they read a sign that said "1 in 3.54 tickets is a winner." It turns out that 3 of the 4 friends win. What is the probability of that happening?
0.065
A coin is tossed 10 times and heads came up 7 times. What is the probability of that occurring?
0.12
Find the probability of getting three heads if a coin is tossed 10 times.
0.12
In the telemarketing industry, the success rate is one call in one hundred resulting in a sale. A salesperson was able to make 7 sales in 895 calls. What is the probability of that happening?
0.12
In the telemarketing industry, the success rate is one call in one hundred resulting in a sale. One particular salesperson was able to make 10 sales in 25 calls. What is the probability of that happening?
2.8 x 10^-14
You take a quiz with 10 multiple-choice questions. Each question has 4 choices and you pick an answer at random for each question. You guess the correct answer on 8 of the 10 questions. What is the probability of that happening?
3.86 x 10^-4
