5,385 Answered Questions for the topic probability

04/23/21

In a drug study of a group of 500 patients, 150 patients responded positively to drug #1, 200 patients responded positively to drug #2 and 90 patients responded positively to both drug #1 and drug #2.
8. In a drug study of a group of 500 patients, 150 patients responded positively to drug #1, 200 patients responded positively to drug #2 and 90 patients responded positively to both drug #1 and... more
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Probability Math Algebra 1 Prealgebra

04/23/21

Please Help! Probability Question
Refer to #6. Suppose that after several trials, the experiment is modified to allow the monkey to look into the box while choosing a shape. The table shows the results.b) Determine the experimental... more
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04/23/21

A fridge contains 4 bananas, 3 apples, 8 oranges, and 1 grapefruit. Please explain + show all steps.
A fridge contains 4 bananas, 3 apples, 8 oranges, and 1 grapefruit. What are the odds in favour of randomly drawing a banana?
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04/23/21

Please Help! Two standard dice are rolled.
Two standard dice are rolled.a) What is the probability of rolling a pair (both the same number)? d) What is the probability that a sum less than 7 is not rolled?
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Probability

04/23/21

Hanger and Cupboard Probabilty question!
Your cupboard has 10 hangers arranged in a row to hang clothes. There are 7 clothes hung.Assume you picked hangers at random among the spaces available. Find the probability thatthe three empty... more
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Probability

04/23/21

Train and seat ticket Probability question!
You are looking for a first-class ticket on a particular train. There are only two seats available inthe whole train with 7 compartments and 100 seats per compartment. Only the first compartmentis... more
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Probability Math Statistics Algebra

04/23/21

A fridge contains 4 bananas, 3 apples, 8 oranges, and 1 grapefruit. Please explain + show all steps.
A fridge contains 4 bananas, 3 apples, 8 oranges, and 1 grapefruit. What are the odds in favour of randomly drawing a banana?
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Expert Answers •1
Probability Math Statistics Algebra

04/22/21

A spinner has four colors: red, yellow, green, and purple.

A spinner has four colors: red, yellow, green, and purple. The experimental probability of spinning a red is 0.2, of spinning a yellow is 0.3, and of spinning a green is 0.4. If the spinner was... more
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Probability

04/22/21

write your answer as a simplified fraction
The probability of an event, P(E), is 3/10. What is P(E’)?
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Probability

04/22/21

write your answer as a simplified fraction.
A bag contains 3 red balls, 5 blue balls, and 6 yellow balls.a) If 3 balls are chosen at random, what is the probability that 2 yellow and 1 red ballwill be selected?b) If 1 ball is chosen at... more
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Probability

04/22/21

write your answer as a simplified fraction.
Two balls are to be selected without replacement from a bag containing 1 red, 1 blue,1 green, 1 yellow, and 1 black ball. What is the probability that the red ball and thenthe green ball is selected?
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Probability Math Statistics Algebra

04/22/21

The experimental probability of randomly choosing a male from a litter of puppies is 1/4. Please show all steps and explain, Thank you.
The experimental probability of randomly choosing a male from a litter of puppies is 1/4. If there are 6 female puppies in the litter, how many males are there?
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Probability

04/22/21

If the probability of an event is 0.91 how likely is it to happen

If the probability of an event is 0.91 how likely is it to happen
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Probability

04/22/21

write your answer as a simplified fraction.
Each of the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 is written on a ticket and the tickets areplaced in a bowl. If 3 of the tickets are selected at random, find the probability thatall three... more
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Probability

04/22/21

write your answer as a simplified fraction.
The probability that Patricia will win the election is 9/14. What is the probability that she will not win the election?
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Probability

04/22/21

write your answer as a simplified fraction.
The names of 3 women and 2 men are written on scraps of paper and placed in a hat.Two slips of paper are drawn, one at a time, with replacement.a) What is the probability that both pieces of paper... more
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Probability Math Statistics

04/22/21

A researcher claims that all call center agents sleep for an average that is less than or equal to 7.5 hours per day with a population standard deviation of 1.4 hours per day.

A researcher claims that all call center agents sleep for an average that is less than or equal to 7.5 hours per day with a population standard deviation of 1.4 hours per day. To validate the... more
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Probability Math Statistics

04/22/21

Two years ago, the average acres of farms in a certain geographic region was 55 acres.

Two years ago, the average acres of farms in a certain geographic region was 55 acres. The standard deviation of the population was 10 acres. A recent study consisting of 25 farms showed that the... more
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Probability Math Discrete Math

04/22/21

How many permutations of the letters a, b, c, d, e, f, g have either two or three letters between a and b.
How many permutations of the letters a, b, c, d, e, f, g have either two or three letters between a and b.Is the answer 1680??
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Probability Math Statistics

04/22/21

Exam takers are classified based on their gender: men and women.

Exam takers are classified based on their gender: men and women. Out of 239 passers, 89 women passed. FInd the lower limit of th 95% confidence interval of the men who passed. Round off answers to... more
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Probability Math Statistics

04/22/21

Mrs Reyes wants to test if her students in Basic Calculus
Mrs Reyes wants to test if her students in Basic Calculus spend less than 30 minutes per day on homework. A random sample of 64 students shows that they spend an average of 24.5 minutes per day on... more
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Probability Math Statistics

04/22/21

Probability Question
On a sunny day there is a 70% chance that Jenny will walk her dog. If there is a 42% chance of sun on Monday what is the probability that Jenny will walk her dog? Please explain as well, thanks. :)
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Probability Math Statistics

04/22/21

A number is chosen randomly from the numbers 1-20. If event A = {a multiple of 5}, what is the value of P(A')?
A number is chosen randomly from the numbers 1-20. If event A = {a multiple of 5}, what is the value of P(A')?Would it be 17/20? I did: Multiples of 5 between 1-20 (5,10,15) 3 numbers, 3/20, P(A) +... more
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04/22/21

Probability Question;
Helena successfully made 21 out of 30 free throw attempts. What is the experimental probability that she can make a successful free throw? If Helena makes 5 out of the next 10 shots, what is her... more
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04/21/21

A coin is tossed 10 times and comes up heads 4 times. What is the experimental probability of this coin coming up
A coin is tossed 10 times and comes up heads 4 times. What is the experimental probability of this coin coming upa) heads?b) tails?
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