What must be the probability that a child has not seen a dentist in more than 5 years? What is the probability that a randomly chosen child has not seen a dentist within the last 6 months?

Q: What is the daily probability of an event that has occurred once in 3 years?

A: Given: An event that has occurred once in 3 years. The probability of the event occurring in a…

Q: A volcano erupts 10 times in 200 years. What is the probability that it will erupt next year?

A: Poisson Distribution: If the average probability of an event happening per unit, and there is a need…

Q: A fair die is rolled 12 times. What is the probability of rolling a 4 on the die 4 times?

A: A binomial probability distribution has following properties. There are only 2 possible outcomes of…

Q: What is the probability of getting at least 7 heads when 20 coins are tossed?

A: Given that, 20 coins are tossed.

Q: A poll is given, showing 65% are in favor of a new building project. If 9 people are chosen at…

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Q: Calculate the exact probability that the mean of 3 die rolls will be >2.5 and less than or equal to…

A: Here is the experiment of rolling a 3 die. Minimum sum=3 =(1,1,1) Maximum sum=18=(6,6,6) A total…

Q: What is the probability that more than  14  enroll in college?

A: The random sample of school graduates, The percentage of students who graduated from high school in…

Q: An insurance company needs to develop a new bankruptcy policy in a new city. It was observed an…

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Q: What is the probability that a server will wait more than 7 minutes to greet the next customer…

A: Given that It is given that an average of 28 customers/hour arrive. Mean( λ)=28 We have to find  the…

Q: dam is constructed so that flood levels will flow over the top on average once every 20 years. When…

A:

Q: If the probability that your DVD player breaks down before the extended warranty expires is 0.046​,…

A: Let 'E' be the event representing that the DVD player breaks down before the extended warranty…

Q: A certain popular song is played on a radio station once in every 15 songs. Suppose you have a long…

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Q: What is the probability of getting exactly one head when a fair coin is tossed for 3  times?

A: GivenA coin is tossed 3 timesn=3p=12=0.5        ( head occurs once in 2 chances i.e., head or…

Q: In a cafe, the proportion of people who order coffee with their lunch is 0.9. A simple random sample…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: what is the probability of an event that must happen?

A: The event that must happen is called as sure event or certain event.

Q: A mortgage advisor sells on average 3.5 mortgages every two weeks. i. What is the probability that…

A: (i) Obtain the probability that they sell 5 mortgages in a two week period. The probability that…