4. A public utility company assumes that annual water consumption (measured in cubic meters) of households with young families with children is normally distributed with mean 120 and standard deviation 55. Compute the probability that a randomly selected family has an annual water consumption of less than 80 cubic meters.

Q: 9. Suppose that systolic blood pressures of a certain population are normally distributed with a…

A:

Q: 4.The weights of bags of cookies are normally distributed with a mean of 15 ounces and a standard…

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Q: 2. The average comic book has 55 pages and a standard deviation of 7 pages. Assume it has a normally…

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Q: Suppose that the talk time on the Apple iPhone is approximately normally distributed with mean 7…

A: Solution: 7. Let X be the talk time on the Apple iPhone. From the given information, X follows…

Q: Suppose that a population is known to be normally distributed with mean = 2,000 and standard…

A: GivenMean(μ)=2000stanadard deviation(σ)=230sample size(n)=16

Q: Suppose that a 1-gallon can of paint covers 513.3 square feet on average with a standard deviation…

A: From the provided information, Mean (µ) = 513.3 square feet Standard deviation (σ) = 31.5 square…

Q: Suppose that the body lengths of adult male crested porcupines in a certain region in Italy are…

A:

Q: 10. An education finance corporation claims that the average credit card debts carried by…

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Q: 4. The height of adult males is normally distributed with a mean of 65 inches and a standard…

A: Mean(µ) = 65Standard deviations (σ) = 2.5X ~ N (µ, σ )= N(65, 2.5)

Q: Cititon Forest contains a population of 326 chupacabra, whose masses have a mean of 30.2 kg and a…

A: Given that ; N = 326 u = 30.2 kg n = 70 kg ? = 7.4 kg By using standard normal distribution we solve…

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: If the weights of sheep are considered normally distributed with a mean of 60 kg and a standard…

A:

Q: Suppose that the average cell phone bill at Bellevue University is $38.90 per month with a standard…

A: Given that, μ=$38.90σ=$3.64n=44 The mean standard deviation of sampling distribution of sample mean…

Q: The number of shots on goal in an amateur hockey league's games is normally distributed, with a mean…

A: Let us assume X= The number of shots on goal in an amateur hockey league's games Given that X…

Q: 1. If the measure of systolic blood pressure is normally distributed with a mean of 120 and a…

A: Hello, since your question has multiple parts, we will solve the first question for you. if you want…

Q: 4. A researcher claims that the standard deviation of the numberof deaths annually from typhoons in…

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Q: Suppose that the miles-per-gallon (mpg) rating of passenger cars is a normally distributed random…

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Q: 4. The average public elementary school has 468 students with a standard deviation of 87. If a…

A: Here use given step by step solution and normal distribution of sample mean

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, if a sample…

A:

Q: 1. In a study of the life expectancy of 500 people in a certain geographic region, the mean age at…

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Q: A sample of size 65 will be drawn from a population with mean 22 and standard deviation 15. Find the…

A: Given that sample size n=65Population mean μ=22Population standard deviation σ=15

Q: Suppose that the weights of the people in a certain office building are normally distributed, with a…

A: Given  μ=150, σ=20, n=16  Note: This probability value calculated from standard normal distribution…

Q: 4 An LED lightbulb manufacturer produces lights with a mean lifespan of 10,000 hours and a standard…

A: Given information- Population mean µ = 10,000 hours Population standard deviation, σ = 1,000 hours…

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: It is given that the mean is 100 and standard deviation is 12.

Q: 5. The average salary of bank managers in a certain city is $91,900 pesos per hour with a standard…

A: Let X be the random variable from normal distribution with average or mean (μ) = $91900 and standard…

Q: Suppose that the sampling distribution of size 10 has a mean of 30 and standard deviation of 3.…

A:

Q: 1.) The average repair cost of a microwave oven is $55, with a standard deviation of $8. The costs…

A: 1) Given that the mean is $55 and the standard deviation is $8. The costs are normally distributed.…

Q: Suppose that the lifetimes of light bubs are approximately normaily dstributed, with a mean of 56…

A:

Q: Suppose that the height of women in Dakar, Senegal is normally distributed with mean 58 inches and…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

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: Suppose that the body lengths of adult male crested porcupines in a certain region in the U.S. are…

A: The random variable X is defined as the body lengths of adult male crested porcupines in a certain…

Q: 1. Suppose the mean life span of a randomly selected Chihuahua dog is normally distributed with a…

A: Solution

Q: Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed…

A: From the given information,Mean (μ) =272days and standard deviation (σ) =19daysSample size (n) =51

Q: The shape of the distribution of the time required to get an oil change at a 10-minute oil-change…

A: Note: Hi there! Thank you for posting the question. As there are multiple sub parts, according to…

Q: Suppose that the starting salaries of MBAS at Wilfrid Laurier University (WLU) are normally…

A:

Q: If the average person adds 27 pounds of glass to recycle per year, with a standard deviation of 3,…

A: Mean (µ) = 27 Standard Deviation (σ) = 3 Sample size (n) = 20 Probability that the sample mean…

Q: Suppose a population has a mean of 90 and a standard deviation of 28. If a random sample of size 49…

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

A:

Q: Suppose the body length of a certain species is normally distributed with mean 39.8 in and standard…

A: GivenMean(μ)=39.8standard deviation(σ)=2.05

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

A:

Q: Assume that the square footage of a residential house in the US is normally distributed with a…

A: According to the given information in this question  We need to find the probability that it will be…

Q: The number of shots on goal in an amateur hockey league's games is normally distributed, with a mean…

A: Let X=the number of shots X follows a normal distribution with mean=56.3 and standard deviation= 8.1…

Q: 4. The monthly utility bills in a city are normally distributed with a mean of $100 and a standard…

A: (4) Obtain the standard z-score for the random variable X equals 90. The standard z-score for the…

Q: Suppose that the starting salaries of MBAs at Wilfrid Laurier University (WLU) are normally…

A: Given the data MBA's at WPUNJ MBA's at Rutgers Mean μ1=62000 Mean μ2=60000 SD, σ1= 14500 SD,…

Q: 6. Suppose that the average outstanding credit card balance for young professionals is 11,200 with a…

A: Given : The average outstanding credit card balance i.e. μ=11200 Standard deviation i.e. σ=2600…

Q: For a Poisson distribution of drivers with mean = 20, what is the probability that the number of…

A: Given that the mean =μ= λ=20So, the standard deviation=σ=λ=20We have to find P(μ-2σ≤X≤μ+2σ)

Q: 4. A line for tickets to a local concert had an average (mean) waiting time of 20 minutes with a…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.