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