A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 34.7 weeks. Assume that for the population of all unemployed individuals the population mean length of unemployment is 34.7 weeks and that the population standard deviation is 7.5 weeks. Suppose you would like to select a random sample of 167 unemployed individuals for a follow-up study. Find the probability that a single randomly selected value is between 34.5 and 36.4. P(34.5

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: Two out of 8 students at a local college say that they skip dinner in the evening. Find the mean,…

A: Given that  Success of probability p =2/8=0.25 Number of trials n=20 X~binomial (n,p)

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

A:

Q: c. Find the p-value. Round to 4 decimals. p-value = d. Make a decision. O Fail to reject the null…

A: Given : Mean : x1 = 46.9x2 = 36.2 standard deviation : σ1 = 12.4σ2 = 15.3 Sample size : n1 = 124n2 =…

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: Suppose that the monthly charges for cell phone plans in the United States are normally distributed…

A: Let:Monthly charges for cellphone plans = xGiven that:Monthly charges for cellphone plans (x) in the…

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: 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: An article in the Register stated that students in the state university system take 4.5 years, on…

A: Givensample size(n)=49Mean(x)=5.1standard deviation(s)=1.2significance level(α)=0.01

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: If the mean of a list of numbers is 16.7 and the standard deviation is 0,

A: Mean is a measure of central tendency. It is one of the most important measures to find out around…

Q: Three hundred college freshmen's grade point averages are seen to be nearly regularly distributed,…

A:

Q: Suppose the prevalence of type II diabetes in a community is 36%. Researchers want to sample 16…

A:

Q: r a standardized psychology examination intended for psychology majors, the historical data show…

A: Given: The corresponding z score can be calculated as: The distribution will be normal as the…

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: 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: A particular fruit's weights are normally distributed, with a mean of 207 grams and a standard…

A: It is given that the fruit weights have a normal distribution with mean 207 grams and standard…

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¯>73) = ?

Q: The amount that people pay for their cellphone service is normally distributed with a mean of $136…

A:

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

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: Assume that the heights of American men are normally distributed with a mean of 69.1 inches and a…

A: From the given information we find the solution

Q: Find the probability that an observation taken from a standard normal population will be more than…

A: We have to find given probability..

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¯<66) = ?

Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

A: normal distributionμ = 500σ = 100P(570<x<640) = ?

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: Suppose that the variance of a hypothetical population is 49. What is the standard deviation?

A: Solution : Given : σ2 = 49 The variance of the population is denoted by σ2 and standard deviation is…

Q: In a population of ages where the mean age is 45 and the standard deviation is 5.25, what are the…

A: Given Mean=45 Standard deviations=5.25

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 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

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.