23% of the teenagers in a city think that shopping malls Close too early. If 20 teenagers are randomly selected, What is the probability that exactly 4 close too early. Hint: Use binomial distribution
Q: A researcher is interested in conducting a mail survey. He finds out that there is a 40% response…
A: The probability that all respond is obtained below:Here, the response rate is considered as a…
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Q: Find the probability of getting 2 to 5 diamonds using normal distribution.
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Q: 25% of the teenagers in a city think that shopping malls close too early. If 19 teenagers are…
A: Answer: From the given data, Let X denotes the event that teenagers thinking that shopping malls…
Q: according to the U.S Department of Transportation, 5.8% of employees in the city of Portland,…
A: Given that the proportion of employees in Portland, Oregon, who commute to work by bike is 5.8%, we…
Q: A researcher is interested in conducting a mail survey. He finds out that there is a 40% response…
A: Consider X is a random variable defined as the number of responds. n is the number of people, and p…
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Q: What is the probability that a z-score will be 0.92 or less?
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Q: A San Diego interviewer has found that one in four people approached will agree to take part in her…
A: Solution: Let X be the random variable that the number of people will agree to an interview. The…
Q: The random number generator program picks a number between 0 and 100 using a uniform distribution…
A: Introduction: Denote X as the random number obtained by the random number generator, between 0 and…
Q: Migraine medication was administered to patients in that 5% experienced weight gain as a side…
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Q: Suppose there is spinner spun two times, the probability of landing on the 1 is 65% The probability…
A: Probability of an event is computed by taking the ratio of number of favourable outcomes to total…
Q: A recent survey reported that 47% of 18- to 29-year-olds in a certain country own tablets. Use…
A: According to the given information,Probability of success, p = 47% = 0.47Number of trials, n = 6Let…
Q: All seven days in the next week will be above freezing. Is this a reasonable application of the…
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Q: class consisting of 50 students had their grades handed out by their professor. Nine of the…
A: Given that Frequency distribution table X 1.00 1.25 1.50 1.75 Frequency 9 8 12 21
Q: The mean height of women in a country (ages 20 - 29) is 64.1 inches. A random sample of 55 women in…
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Q: The average monthly grocery bill for an individual is normally distributed with a mean of $85 and a…
A: Solution: Let X be the average monthly grocery bill for an individual is normally distributed with…
Q: A sample of 10 washing machines is selected from a process that is 8% nonconforming. What is the…
A: Given, A sample of 10 washing machines is selected from a process that is 8% nonconforming. This…
Q: It is reported that dark chocolate is beneficial to the heart. Suppose that 52% of people in a…
A: Given
Q: On the average, Jayson commits 4 personal fouls in a basketball game. What is the probabili…
A: We have given that On the average, Jason commits 4 personal fouls in a basketball game.
Q: 16 of the 200 digital video recorders (DVRs) in an inventory are known to be defective. What is the…
A: Given that, 16 of the 200 digital video recorders (DVRs) in an inventory are known to be…
Q: An oil company conducts a geological study that indicates that an exploratory oil well should have a…
A: Geometric distribution: The probability mass function of Geometric distribution is P(n) = p(1 - p)n…
Q: It has been a bad day for the stock market with 60% of securities losing value. You are evaluating a…
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Q: In an experiment with 49 degrees of freedom, value was found to be 62-7. What is the chance that in…
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Q: A recent survey reported that 50% of 18- to 29-year-olds in a certain country own tablets. What…
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Q: 10% of tools produced by a certain manufacturing process turn out to be defective. Assuming…
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Q: l Canadian adults have used their cell phone while in a retail store. I drive down to the local…
A: The sampling distribution of the sample proportion is approximately normal with at least 5 expected…
Q: What is the probability that at the least 276 rooms will be occupied? Use binomial distribution to…
A: Given data: Number of rooms included in a sample, n = 300. Probability that a reservation is…
Q: A drug tester claims that a drug cures a rare skin disease 72% of the time. The claim is checked by…
A: Given,n=100p=0.72mean(μ)=np=100×0.72=72standard deviation(σ)=npqσ=100×0.72×(1-0.72)=4.48999
Q: 39.9% of consumers believe that cash will be obsolete in the next 20 years. Assume that 6consumers…
A: Introduction: Denote Denote X as the number of consumers who believe that cash will be obsolete in…
Q: 41% of US asks have very little confidence in newspapers. you randomly select 10 US adults. find the…
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Q: It has been observed in a city that 64% of the people who go to cinema at weekend are women. In a…
A: Given,n=80p=0.64
Q: If a seed is planted, it has a 70 %chance of growing into a healthy plant. If 10 seeds are planted,…
A: Given data, p=0.70 (grows healthy plant) If n=10 then P(X=1) doesnot grow=?
Q: A recent survey reported that 47% of 18- to 29-year-olds in a certain country own tablets. What…
A: Probability that 18-to-29 year olds in a certain country own tablets(p)=0.47sample size(n)=6Let "x"…
Q: 3% of the computers produced in a factory are defective. Use the Poisson distribution to approximate…
A: We have to find given probability.
Q: A researcher is interested in conducting a mail survey. He finds out that there is a 40% response…
A: The probability that exactly one responds is,
Q: Decide whether you can use the normal distribution to approximate the binomial distribution. If you…
A: (a) Obtain the probability that the number of people who say auto racing is their favorite sport…
Q: A School has found there is a 3% probability that the question paper contains an error. Assume…
A: GivenThe probability that question paper contain error = 3% let p = 0.03 Total number of question…
Q: Use the Binomial Distribution to calculate the probability that Lisa was hit by 3 or fewer rotten…
A: Given:- Binomial distribution we have to calaculate PX≤3 let success = lisa hits the egg =p…
Q: Determine whether the given scenario meets the criteria of a binomial distribution. If not, identify…
A: The scenario is given as:"Seven randomly chosen college students were asked if they went to the last…
Q: The number of corner kicks in a 90 minute soccer game follows a Poisson distribution with a mean of…
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- A sample of 3 medicine bottles is taken from an injection molding machine that is 10% nonconforming. What is the probability of 1 nonconforming medicine bottle in the sample?The proportion of eligible voters in the next election who will vote for the incumbent is assumed to be 53.9%. What is the probability that in a random sample of 430 voters, less than 49.2% say they will vote for the incumbent?A tube of listerine tartar control toothpaste 4.2 ounces. As people use the toothpaste the amount remaining in any tube is random. Assume the amount of toothpaste remaining in the tube follows a uniform distribution. What is the probability that there is more than 1.5 ounces remaining in the tube?
- Calculate the probability of a sample mean being at least as high as a specified value when σ is estimated?What is the probability that a Z-score will be 0.92 or less?A transportation department reported that all domestic airlines in on-time arrivals for domestics’ flights with a rate of 0.825. Using the binomial distribution, what is the probability that in the next six flights, that at least four flights will be on time?
- Suppose that 84% of all customers who use the service department at a certain automotive dealership would recommend the service to a friend. A random sample of 50 customers is taken. Canwe use the Normal distribution to compute probabilities about the sample proportion of thosewho would recommend the service to a friend? Why or why not?Suppose 2 dice are rolled, and suppose the discrete variable x counts the number of 3’s that show up. Plot the probability distribution for x using a bar graph. What is the expected value for the random variable x? What is the variance for the random variable x?It is found that 35% of students from a local college plays for a sports team and 25% of students watches ESPN daily. Of those students who plays sports for a team, 55% of them watch ESPN daily. Find the probability(in percent) that a randomly chosen person from this college: watches ESPN daily and plays for a sports team. plays for a sports team given that they watch ESPN daily
- Based on a survey, among adults who regret getting tattoos, 20% say that they were too young when they got their tattoos. Assume that five adults who regret getting tattoos are randomly selected. Does this scenario follow a binomial distribution? Explain why. Find the probability that none of the selected adults who regret getting tattoos, say that they were too young to get tattoos. Find the probability that exactly one of the selected adults who regret getting tattoos, says that he or she was too young to get tattoos. Find the probability that the number of adults who regret getting tattoos, say that they were too young is none or one. Find the mean of adults who regret getting tattoos.Assume 97% of smart phones work (so the probability that a chosen smart phone works is .97). if three smart phones are tested at random, what is the probability that all three work? (three decimal places)You are looking for the probability to draw 3 aces in 5 attempts from a deck of cards. There are 52 cards in the deck and 4 of them are aces. Explain why the poisson is not a good choice for describing this data-generating process. Which distribution would you use instead? No calculations necessary.