Please explain this to me because im really stumped here!!: The probability of winning a game is 20%. If you play 20 times, how many times should you expect to win?
A.4 times
B.10 times
C.16 times
PLEASE HELP!!!!
.20 * 20 = 4
What about the other answers
The other answers, 10 and 16, are incorrect.
If the probability of winning a game is 20%, and you play 20 times, you can expect to win 4 times.
2. The probability of having a winning raffle ticket is 15%. If you bought 40 tickets, how many winning tickets should you expect to have?
O3 tickets
O6 tickets
O15 tickets
The expected number of winning tickets can be calculated by multiplying the total number of tickets by the probability of winning:
Expected number of winning tickets = 0.15 * 40 = 6
Therefore, you should expect to have 6 winning tickets if you bought 40 tickets.
The answer is B. 6 tickets.
3. A survey of a random sample of moviegoers shows that 40% purchase popcorn to eat while watching the (1 point) movie. If a theater has 80 people in it, how many people should you expect to have purchased popcorn?
040 people
O36 people
O32 people
If 40% of moviegoers purchase popcorn and there are 80 people in the theater, the expected number of people who purchased popcorn can be found by:
Expected number of people who purchased popcorn = 0.40 x 80 = 32
Therefore, you should expect 32 people to have purchased popcorn if there are 80 people in the theater.
The answer is C. 32 people.
4. A manufacturer finds that 10% of the flashlights in a sample are defective. Predict how many defective flashlights there will be in a shipment of 4,000 flashlights.
O4 flashlights
O40 flashlights
0400 flashlights
If 10% of the flashlights are defective in a sample, then the probability of any flashlight being defective is 0.10.
Multiplying this probability by the number of flashlights in the shipment of 4,000, we get the expected number of defective flashlights:
Expected number of defective flashlights = 0.10 x 4,000 = 400
Therefore, we can predict there will be 400 defective flashlights in the shipment of 4,000.
The answer is C. 400 flashlights.
5. In a random sample of 30 sixth graders, 9 had traveled outside of the United States. There are a total of
120 sixth graders in the school. Predict how many students have traveled outside of the United States.
O 28 students
O 36 students
O45 students
If 9 sixth graders out of a sample of 30 have traveled outside of the United States, we can use this proportion to predict the number of sixth graders who have traveled outside of the U.S in the entire school of 120 sixth graders.
We can set up a proportion:
9/30 = x/120
where x is the number of sixth graders who have traveled outside of the U.S in the entire school.
Solving for x, we get:
x = (9/30) * 120 = 36
Therefore, we can predict that 36 sixth graders in the school have traveled outside of the U.S.
The answer is B. 36 students.
6. On a multiple-choice test, the chance of randomly guessing the correct answer to a question is 25%. If you guess the answer to every question on a 20-question test, how many answers should you expect to get correct?
O5 questions
O8 questions
O4 questions
If the chance of guessing the correct answer to a question on a multiple-choice test is 25%, and there are 20 questions on the test, we can predict the number of correct answers by multiplying the number of questions by the probability of getting each question correct:
Expected number of correct answers = 0.25 x 20 = 5
Therefore, we can expect to get 5 answers correct if we guess the answer to every question on a 20-question test.
The answer is A. 5 questions.
7. A teacher asks 40 randomly selected students if they watched the new action movie over the weekend. If (1 point)
12 of the students surveyed saw the movie, predict how many of the 500 students at the school saw the movie.
O 200 students
O150 students
O 125 students
If the teacher asked 40 randomly selected students and 12 of them watched the new action movie over the weekend, we can use this proportion to predict the number of students who watched the movie out of the entire school of 500 students.
We can set up a proportion:
12/40 = x/500
where x is the number of students in the entire school who watched the movie.
Solving for x, we get:
x = (12/40) * 500 = 150
Therefore, we can predict that 150 students out of the 500 students at the school watched the new action movie over the weekend.
The answer is B. 150 students.
8. A company finds 8 bags with faulty zippers in a sample of 500. Predict how many bags with faulty zippers (1 point) are in a shipment of 20,000.
O 320 bags
O360 bags
O 400 bags
If 8 bags out of a sample of 500 have faulty zippers, we can use this proportion to predict the number of bags with faulty zippers in a shipment of 20,000 bags.
We can set up a proportion:
8/500 = x/20,000
where x is the number of bags with faulty zippers in the shipment of 20,000 bags.
Solving for x, we get:
x = (8/500) * 20,000 = 320
Therefore, we can predict that there will be 320 bags with faulty zippers in the shipment of 20,000 bags.
The answer is A. 320 bags.
9. In a survey of 50 randomly selected families at the zoo, 15 families chose the polar bear exhibit as their favorite. If 2,000 families are at the zoo, predict how many like the polar bear exhibit the best.
O60 families
O400 families
O 600 families
If 15 families out of a sample of 50 chose the polar bear exhibit as their favorite, we can use this proportion to predict the number of families who prefer the polar bear exhibit out of the total 2,000 families at the zoo.
We can set up a proportion:
15/50 = x/2,000
where x is the number of families who prefer the polar bear exhibit out of the 2,000 families at the zoo.
Solving for x, we get:
x = (15/50) * 2,000 = 600
Therefore, we can predict that 600 families prefer the polar bear exhibit out of the 2,000 families at the zoo.
The answer is C. 600 families.
10. In a sample of 60 diners at a restaurant, 12 had ordered an appetizer. If the restaurant serves 800 diners (1 point) each day, how many are likely to order an appetizer?
O16 diners
O160 diners
O 143 diners
If 12 diners out of a sample of 60 ordered an appetizer, we can use this proportion to predict the number of diners who will order an appetizer out of the 800 diners who visit the restaurant each day.
We can set up a proportion:
12/60 = x/800
where x is the number of diners out of 800 who will order an appetizer.
Solving for x, we get:
x = (12/60) * 800 = 160
Therefore, we can predict that 160 diners out of the 800 diners who visit the restaurant each day will order an appetizer.
The answer is B. 160 diners.
Thanks bot I got a 100%
You're welcome! Congratulations on getting a perfect score! If you have any more questions or need help in the future, feel free to ask.
thank you @i need help. I appreciate it man.
You're welcome! Don't hesitate to reach out if you need any further assistance in the future. Have a great day!
you to
Thank you!
np
Have a good day!
Huh....The question is different. Mine says 15%
20 goes into 100 4 times. so how many times does 4 go into 20...
it would be 4