2. The probability that a package is delivered on time is 0.97. If 500 randomly selected packages are delivered from this population, what are the mean and standard deviation for the on-time packages?

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 19.4…

A: Solution :  Mean = 19.4 Standard deviation = 2.8 Sample size = 36 P(xbar > 18) z-statistic: (xbar…

Q: In a certain book, the frequency distribution for the number of words per page may be taken as…

A:

Q: 1. The average number of milligrams (mg) of cholesterol in a cup of a certain brand of ice cream is…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: (a)What is the probability that at least 5 of the students are first generation college students?…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: A soft drink machine is regulated so that it discharges an average of 200 ml per cup. If the amount…

A: given information is  Let X represent the amount of drink distributed. μ =200 σ=15 a) P ( X > 224…

Q: Assume the average attendance of a college game is normally distributed with a population mean of…

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

Q: A civil engineer takes a public ride going to his firm. The average time for his trip is 24 minutes,…

A: Given Information: Population mean (u) = 24 minutes Standard Deviation (s) = 3.80 minutes Target…

Q: Suppose 20% of all emergency room patients have broken bones. Of the next fifteen patients to…

A:

Q: A Nielsen Company report states that the mean number of TV sets in a U.S. household is 2.24. Assume…

A: Solution: Given information: n= 85 Sample size  μ= 2.24 Population mean σ=1.2 Population standard…

Q: 6. Suppose the mean weight of school children's book bags is 17.5 pounds, with standard deviation…

A: Solution :-

Q: 6. If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A: Given,n=400Probability of success(p)=0.1Probability of failure(q)=1-0.1=0.9here we can use binomial…

Q: (d) What is the probability that the number of drivers will be within 2 standard deviations of the…

A: Let X=the number of drivers X follows a Poisson distribution with mean= 20 So the standard…

Q: 1. The mean weight of 5-year-old children is 39.5 pounds, and the standard deviation is 3.2 pounds.…

A: Given that  X~N(μ= 39.5 , σ= 3.2 ) μ= 39.5 , σ= 3.2 , n=52

Q: Suppose it is known that 80% people own a cellphone. If a random sample of 100 people were surveyed,…

A:

Q: Suppose the grades in a finite mathematics class are normally distributed with a mean of 75 and a…

A: Given Data: The mean of the distribution is: μ=75 The standard deviation of the distribution is: σ=5…

Q: 2. The average daily jail population in the New Bilibid prison in Muntinlupa City is 36,295. If the…

A: The average population of jail is 36,295. The standard deviation of the population in jail is 3760.

Q: Suppose the average time spent driving for drivers age 20 to 24 is 25 minutes and you randomly…

A: It is given that mean and standard deviation are 25 and 1.5, respectively.By using central limit…

Q: According to the Nielsen Company, the mean number of TV sets in a U.S. household in 2013 was 2.24…

A: Mean = 2.24 Standard deviation = 1.3 Sample size = 95

Q: Use the CLT again to determine the probability that the mean taxable wages in James' sample of 50…

A: It is given that mean is 28.29 and the standard deviation is 33.493.

Q: Suppose the probability a patient will recover from a disease following medication is 0.7. In a…

A: Given : the probability a patient will recover from a disease following medication is 0.7.  In a…

Q: b. The average commute to work is 25 minutes. If we assume that commuting times are normally…

A: We have to find given probability..

Q: A study at a college in the west coast reveals that, historically, 45% of their students are…

A: a) It is known that, the mean of the sampling distribution of sampling distribution, p-hat is equal…

Q: Suppose that, according to a recent census, the income per capita measured in U.S. dollars was…

A: The per capita income in country A is $41716. The per capita income in country B is $44871. The…

Q: Suppose it is known that the mean and the standard deviation for a given population are 65 ar 8,…

A:

Q: Thailand, the probability of catching a cold during the rainy season is 0.4. Assume ten people are…

A:

Q: Suppose that scores on an exam are normally distributed with mean 80 and standard deviation 5, and…

A: Solution. Given score follow normal distribution. Mean = 80  Score= 5

Q: The service time for customers coming through a checkout counter has mean 50.4 seconds and standard…

A: Define X as the service time for customers coming through a checkout counter has mean 50.4 seconds…

Q: 2. The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample…

A: For a random variable X, with mean μ and standard deviation σ , the average of X =1n∑xii=1n =X¯…

Q: 1. Suppose the height of a tomato plant follows a normal distribution with a mean of 74.5…

A:

Q: 4. The weights of male basketball players on a certain collegiate basketball league are normally…

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

Q: 2.Suppose that 60% of middle school students in San Diego wear braces. A random sample of 250 San…

A: Given Information : Suppose that 60% of middle school students in San Diego wear braces. A random…

Q: A certain type of new business succeeds 30 % of the time. Suppose that three such businesses open.…

A: Solution: Let X be the random variable of new business succeeds . The probability of new business…

Q: 2. The number of pages in a PDF document you create has is randomly distributed between 5 and 9…

A:

Q: 3. Suppose that the IQ scores of Grade 11 students of OSFI is normally distributed with a mean of…

A:

Q: 3. For a certain type of computers, the length of time bewteen charges of the battery is normally…

A: Given information: Mean=50 hours and standard deviation=15 hours. That is, μ=50 and σ=15

Q: The Economic Policy Institute periodically issues reports on wages of entry level workers. The…

A: Obtain the probability that a sample of 50 male graduates will provide a sample mean within $0.50 of…

Q: If the average length of all low-weight babies at the time of birth is known to be 36.5 centimeters…

A: Given Data: Mean=36.5 SD=2.4

Q: 2) The mean monthly rent for a one-bedroom apartment without a doorman in Manhattan is $ 2,639.…

A:

Q: According to government data, the probability that a woman between the ages of 25 and 29 was never…

A: Let X be the random variable of number of women that never married Given n=10 p=0.4 X ~ Binomial(10,…

Q: d) What is the standard deviation for the number of adult Americans out of the 20 we would expect to…

A: We have given that,  X be the random variable from Binomial distribution with probability of success…

Q: What is the standard deviation of the commuting time?

A: The standard deviation formula for uniform distribution is, σ=b-a12 The commuting time on a…

Q: Suppose a set of 100 random numbers is normally distributed, with a mean of 50 and standard…

A: suppose a set of random numbers is normally distributed, with a mean of 50 and standard deviation 2.…

Q: 20. Suppose that the sales of a Gas station followed a uniform distribution, with a standard…

A: Given: Let X be the uniform random variable representing the sales of a Gas station  Standard…

Q: Suppose 150 people take a quiz, and say the mean score was a 100 out of 200 points, with a standard…

A: Given data:     The given mean score is: μ=100. The standard deviation is: σ=40. The number of…

Q: 1-The length of time a domestic flight must wait between gate departure and takeoff taxi at Boston's…

A: Solution: 1. Let X be the length of time a domestic flight must wait between gate departure and…

Q: Suppose that 8% of all males suffer some form of color blindness. 350 men are sampled. a. What is…

A:

Q: 3. If the probability of a defective bolt is 0.1, find (a) the mean, (b) the standard deviation, for…

A: