The probability that a randomly selected piece of the plastic will have a lifetime less than 8.996 years is (b)The probability that a randomly selected piece of the plastic will have a lifetime between 6.356 and 8.996 years is (c) 99.80% of the plastic will have a lifetime less than how many years.

Q: Scores on the Wechsler Adult Intelligence Test are normally distributed with a mean of 100 and a…

A: Given:' Mean = μ=100 Standard deviation = σ= 10

Q: A population has a mean of 33 and a standard deviation of 5 . What is the probability that the…

A: Population mean=33Population standard deviation=5Sample size n=58

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A:

Q: The weight of trucks traveling on a particular section of I-475 has a population mean of 15.8 tons…

A: Central limit theorem: The central limit theorem implies that the distribution of the sample means…

Q: Let μ be the mean annual salary of Major League Baseball players in 2002. Assume that the standard…

A: From the provided information, Standard deviation (σ) = 99000 Sample size (n) = 50

Q: The life of a semiconductor laser at a constant power is normally distributed with a mean of…

A: Solution : Given that , mean =  = 416 standard deviation =  = 136 a) P(x > 516) = 1 - p( x<…

Q: Suppose a life insurance company sells a $160,000 1-year term life insurance policy to a 20-year-old…

A: Given :Prob. of female survives ( p ) = 0.999544The amount a female need to pay to company = $210The…

Q: If x is a normally distributed variable with a mean of 151.7 and a standard deviation of 21.9, what…

A: GivenMean(μ)=151.7standard deviation(σ)=21.9

Q: The lengths of lumber a machine cuts are normally distributed, with a mean of 96 inches and a…

A: Given,Mean, μ = 96 inches.Standard deviation, σ = 0.5 inch.Let X be a random variable represents the…

Q: rage life of a certain steel-belted radial tire is advertised as 60,000 miles. Assume that the life…

A: The corresponding z-value needed to be computed is:

Q: The amount of snowfall falling in a cetain mountain range is normally distributed with a 70 inches,…

A: Given Information: Mean μ = 70inches Standard deviation σ = 10 inches Sample size n = 25 To find the…

Q: A veterinary researcher takes an SRS of 60 horses presenting with colic whose average age is 12…

A: Option b is the correct answer.

Q: Suppose that the monthly incomes of all employees in Firm A are normally distributed with a mean of…

A: Given: Let us define the random variable X as the monthly income of employees in firm A. Mean = μ =…

Q: the life expectancy for a species of certain insects is normally distributed with mean of 14.3…

A: It is given that the mean is 14.3 and the standard deviation is 4.3.

Q: Suppose the weight of an adult male Labrador is normally distributed with u=71.2 pounds and a…

A: Mean()=71.2standard deviation()=3.4

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: A population is normally distributed with mean 15 and standard deviation 2.6. Find the probability…

A:

Q: the life of a certain brand of car stereo is normally distributed with a mean of 5.2 years and a…

A: According to the given information in this question, we need to find the following probability

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: Find the probability that the person is between 65.1 and 66.4 inches? Let X = height of the…

Q: The height of an adult male in the United States is approximately normally distributed with a mean…

A: From the provided information, Mean (µ) = 69.0 Standard deviation (σ) = 2.6  X~N (69.0, 2.6)

Q: The tread life of Stone Soup tires can be modeled by a normal distribution with a mean of 35,000…

A: Given: Population mean = 35000 Population standard deviation  = 4000     Sample size (n) = 100 Let X…

Q: annual precipitation amounts in a certain mountain range are normally distributed with a mean of 82…

A: Given,sample size(n)=25mean(μ)=82standard deviation(σ)=9

Q: For a large metropolitan area, carbon monoxide concentrations in air samples come from a normal…

A: We have to find out answer of given question....

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A: To find: what is the probability that the mean weight loss after one week on this pill for a random…

Q: IUSS pill advertises that people who use the pill lose, after one week, an average (mean) of 1.8…

A: We have given that  X~N( μ , ?^2 )   Z-score =( x - μ )/?

Q: fertility rate is the number of births per 1000 women aged 15-44. The mean fertility rate of the 50…

A: According to the given information in this question We need to find the following probability

Q: he level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful…

A: Given Data: Mean (μ)=85 Standard deviation (σ)=6 Variance (σ2)=36 Sample size(n)=16   Let X be the…

Q: Previous studies showed that the lifetime of solar panels is normally distributed with a mean of 27…

A:

Q: In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a…

A: Mean()=69.7Standard deviation()=4

Q: In a 15-day period, the amount of growth for a population of sunflower plants was found to be a…

A: Here it is given that the growth of sunflower is normally distributed with mean=3.18 and SD=0.52…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A:

Q: Suppose the number of movies people rent per month is normally distributed with a mean of 4.8 and a…

A: Let x be the number of movies people rent per month which follows normal distribution with mean 4.8…

Q: The speed of cars driving on Route 1 is normally distributed with a mean of 60 mph and a standard…

A: It is given that the, The speed of cars is normally distributed with a mean of 60 mph and a standard…

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

A: Given that mean =1.85,s.d =1.02,n=55,x bar =1.88

Q: Given that pregnancies have a mean of 266 days and standard deviation of 16 days, it is found that…

A: We have given that,  X be the random variable from normal distribution with mean = 266 and standard…

Q: A particular fruit's weights are normally distributed, with a mean of 450 grams and a standard…

A: Given,mean(μ)=450standard deviation(σ)=12