A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 19.8 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 19.8 weeks and that the population standard deviation is 7.6 weeks. Suppose you would like to select a random sample of 140 unemployed individuals for a follow-up study. Find the probability that a single randomly selected value is between 20.4 and 20.7. P(20.4 < X < 20.7) =  Find the probability that a sample of size n=140n=140 is randomly selected with a mean between 20.4 and 20.7. P(20.4 < M < 20.7) =

Q: A large population has a mean of 60 and a standard deviation of 8. A sample of 50 observations is…

A: GivenMean(μ)=60standard deviation(σ)=8sample size(n)=50

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).…

A:

Q: The monthly utility bills in a city are normally distributed with a mean of $121 and a standard…

A: Given : The monthly utility bills in a city are normally distributed with a mean of $121 and a…

Q: Given the mean is 120 minutes and the standard deviation is 30 minutes. What is the probability that…

A: The mean is 120 minutes and standard deviation is 30 minutes.

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7000 and…

A:

Q: Tiger Woods hits an average driver 287.2 yards with a standard deviation of 24.6 yards. What is the…

A: The probability value is calculate by means of standard normal variate with the random variable,…

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: A particular fruit's weights are normally distributed, with a mean of 526 grams and a standard…

A: Given that, Mean = 526 Standard deviation = 36 Sample size = 7

Q: What is the probability that your score on an exam will be less than a 60, if the mean on the exam…

A: We have to find probability that your score on an exam will be less than a 60....

Q: The weekly salaries of teachers in one state are normally distributed with a mean of $980 and a…

A: Let, X=The weekly salaries of teachers in one state  Given that X is normally distributed with a…

Q: The Monthly salaries of teachers at Los Angeles Trade Tech are normally distributed with a mean of…

A: Given information: The monthly salaries of teachers at Los Angeles Trade Tech are normally…

Q: Assume that the salaries of elementary school teachers are normally distributed with a mean $35,000…

A:

Q: a population has a mean of 74 and a standard deviation of 17.4. a sample of 35 items is randomly…

A:

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: A certain video game has 72% chance of sucess. During summer vacation a person plays 12 games a day.…

A: In question, Given that A certain video game has 72% chance of sucess. During summer vacation a…

Q: report in Newsweek stated that the day-care cost per week in Boston is $109. If this figure is taken…

A: Given Mean=109 n=50 S=20

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: 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: A leading magazine reported at one time that the average number of weeks an individual is unemployed…

A: We have given that  X~N(mu,sigma ^2) mu=29 ,sigma =3.5 Z-socre =(x-mu)/sigma

Q: A normal population had a mean of 70 and a standard deviation of 12. You select a random sample of…

A: μ = 70σ = 12n = 9P(x¯&gt;73) = ?

Q: The owner of a computer repair shop has determined that their daily revenue has mean $7200 and…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: The weekly salaries of teachers in one state are normally distributed with a mean of $490 and a…

A: Given,Mean, μ = 490Standard deviation, σ = 45Let X be a random variable represents the weekly…

Q: normal population had a mean of 70 and a standard deviation of 12. You select a random sample of 9.…

A: given data normal distributionμ = 70σ = 12n = 9 P(x¯&lt;66) = ?

Q: A physical fitness association is including the mile run in its secondary-school fitness test. The…

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

Q: The census bureau reported that the mean household income in Hayward in 2019 was $86,744 with a…

A: Given that, n=150,x¯=89396μ=86744σ=18700 The mean and standard deviation of the sampling…

Q: The grades of a statistics midterm are normally distributed with a mean of 79 and a standard…

A: Normal distributionμ=79σ=3.5pgrade between74 and 80=?

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A:

Q: About 7% of the population has a particular genetic mutation. 183 people are randomly selected.…

A: Given Information: Number of people, n = 183 Percentage of population has a particular genetic…

Q: A recent study found that 69% of all adults over 50 wear sunglasses for driving. In a random sample…

A: Formula : Mean = np Standard Deviation  :

Q: A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations be taken.…

A: Given: Population mean μ = 84 Population standard deviation σ = 12 Sample size n = 36

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: What is the probability that a randomly selected student will drink less than the suggested amount…

A:

Q: Suppose that you are studying the number of vehicles owned by a US household. You find that the…

A: We have given that,  Let X is random variable are normally distributed with mean (mu) = 1.9 and…

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.