A particular brand, X, is known to have a market share of 35%. Suppose that in a survey, 2000 consum brand they prefer. The approximate probability that more than 700 consumers will say that they prefer brand X is (give your answer correct to 2 decimal places)

Q: A recent study has shown that 68% of parents allow their children to ride their bicycles without…

A:

Q: The time it takes me to ride my bike to school is uniformly distributed between 27 minutes and 48…

A:

Q: Cumulative SAT scores are approximately normally distributed with a mean of 1550. If a sample of 12…

A:

Q: The time between landings of planes at a local airport has an exponential distribution with a mean…

A: The probability density function of exponential distribution is given by

Q: Assume that at Milo’s loading dock load times can be described using an exponential distribution and…

A: Given,The average time to load a truck is 15 minutesand A random variable X~exponential…

Q: A certain disease has an incidence rate of 0.2%. If the false negative rate is 4% and the false…

A:

Q: If a tire plant is not causing cancer, then we can expect u = 3 cancer deaths over a 20-year period.…

A: We have to use Poisson distribution. Poisson distribution : Poisson random variable defines number…

Q: In a certain industrial facility, accidents occur infrequently. It is known that the probability of…

A: n=300 p = 0.007   when np<15, we can use poisson approximation for binomial distribution.  λ = np…

Q: The probability of a randomly selected adult in one country being infected with a certain virus is…

A:

Q: A certain disease has an incidence rate of 0.9%. If the false negative rate is 7% and the false…

A:

Q: A recent study of robberies for a certain geographic region showed an average of 1 robbery per 18717…

A: From the provided information, The study showed an average of 1 robbery per 18717 people. And there…

Q: Seventy-six percent of small business owners do not have a college degree. If a random sample of 50…

A:

Q: the probability that 50 randomly selected light cigarettes from this company will have a total…

A:

Q: For next year, 46% of veterans will buy a single-family home. If we pick a random sample of 5…

A: Use TI-84 function, "binompdf(trails, p, x value)" to find the probability.

Q: is believed that 0.32 of adults HAVE NEVER read a book since graduating from high school. If you are…

A:

Q: The United States Department of Agriculture (USDA) found that the proportion of young adults ages…

A: Given Information: p = 0.238 n = 500 Let X be the number of individuals who regularly skip breakfast…

Q: Suppose that the time between calls at a customer service center, X, has an exponential distribution…

A:

Q: A study concluded that among people with a certain virus, 99.3 % of tests conducted were (correctly)…

A:

Q: Suppose the commuting time from North Bay to Barrie varies uniformly from 135 min to 180 min. What…

A: GivenA random variable x~Uniform(135,180)f(x)=1180-135f(x)=145     ; 135≤x≤180and cumulative…

Q: The time it takes me to wash the dishes is uniformly distributed between 7 minutes and 13 minutes.…

A:

Q: In 1970, 98% of 30-year-olds in a country earned more than their parents did at age 30 (adjusted for…

A:

Q: The units without evidence of gas leaks or electrical failure showed other types of failure. If this…

A:

Q: The probability of a randomly selected adult in one country being infected with a certain virus is…

A: It is given that the, The probability that a randomly selected adult in one country being infected…

Q: The average time between arrivals of movie theatre customers is 4 minutes. Assuming an exponential…

A:

Q: A recent study has shown that a new treatment cures a certain disease 66% of the time. If this…

A: We have to use Binomial distribution. Binomial distribution : If x follows Binomial distribution…

Q: The proportion of individuals that regularly smoke in a population is known to be 0.25. What is the…

A: Given information: p=0.25 Sample size, n=100

Q: Suppose that a particular candidate for public office is in fact favored by 49% of all registered…

A: The provided information are: Population proportion=0.49Sample size(n)=600

Q: Oliver knows that a virus is relatively virulent and estimates that 15% of the population has the…

A: Let the testing kit of Oliver accurately identifies the disease with a probability of p. Probability…

Q: The time to failure of a certain type fo electrical component is assumed to follow an exponential…

A: Consider X be a random variable which follows exponential distribution indicates the failure time of…

Q: At a certain bank the amount of time that a customer spends being served by a teller is exponential…

A: The exponential mean of customer served by teller is 3 minutes.

Q: It is said that it usually takes three years for the accident vehicle to be repaired.What is the…

A: Exponential Distribution: A continuous random variable X is said to follow Exponential distribution…

Q: The mean GPa of university students is 2.3 with a SD of 1.2. If you were to draw 36 students at…

A:

Q: The time between arrival of buses follows an exponential distribution, with a mean of 20 minutes. •…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: When the value of A is increased, the probability of committing type I error is None of the above…

A: Type I error is the probability of rejecting the null hypothesis when it is correct. It is denoted…

Q: One environmental group did a study of recycling habits in a California community. It found that 72%…

A:

Q: The probability of an adult in Australia having hazel colored eyes is 20%. If a simp random sample…

A: Given information: The probability of an adult in Australia having hazel colored eye is 20%. The…

Q: A doorman at a hotel is trying to get three taxi-cabs for three couples. The arrival of empty cabs…

A:

Q: The probability of a randomly selected adult in one country being infected with a certain virus is…

A: Given P(infected)=0.004 Sample size=24 P(not  infected)=0.996

Q: A certain disease has an incidence rate of 0.4%. If the false negative rate is 4% and the false…

A: Given, the incidence rate of the disease is 0.4% i.e. P(disease)=0.004 False negative rate is 4%,…

Q: The probability that a randomly selected teenager studied at least once during a week was only 0.61.…

A: The probability of teenager studied in a week is 0.61. The total number of student in the group is…

Q: An investigative bureau uses a laboratory method to match the lead in a bullet found at a crime…

A: Given that N=1809

Q: The time between calls to a corporate office is exponentially distributed with a mean of 0.2 hours.…

A:

Q: A certain disease has an incidence rate of 0.7%. If the false negative rate is 8% and the false…

A: P(D) = 0.007 P(D')  = 1-0.007 =  0.993 P(+|D) = 1-0.08 =  0.92 P(+|D') = 0.04

Q: The probability of a randomly selected adult in one country being infected with a certain virus is…

A: Solution

Q: A certaln disease has an Incidence rate of 0.4%. If the false negative rate Is 5% and the false…

A:

Q: The time it takes me to wash the dishes is uniformly distributed between 12 minutes and 22 minutes.…

A:

Q: from previous published studies, the probability that a pine snake hatched in a zoo will survive to…

A: Solution: Let X be the number of pine snakes that will survive to maturity and n be the sample…

Q: A certain disease has an incidence rate of 0.2%. If the false negative rate is 5% and the false…

A:

Q: The time it takes me to wash the dishes is uniformly distributed between 7 minutes and 14 minutes.…

A: Solution: Let X be the time it takes to wash the dishes. From the given information, X follows…