It has been stated that about 41% of adult workers have a high school diploma but do not pursue any further education. If 20 adult workers are randomly selected, find the standard deviation adult workers have a high school diploma but do not pursue any further education.

Q: According to a survey, the average height of NBA players is 78 in. with a standard deviation of 7…

A: We have given that,  X is random variable are normally distributed with average or mean (mu) = 78…

Q: A pharmaceutical company claims that a drug is effective in treating 90% of people having severe…

A: Given that,The random variable follows binomial distribution,n=6p=90%=0.9,q=1-p, q= 0.1

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

A: According to the sum A study at a college in the west coast reveals that, historically, 45% of their…

Q: The year Martina graduated college, she got a job as an entry-level software engineer working for a…

A: GivenMean(μ)=57000standard deviation(σ)=3700starting salary (x)=65000

Q: In a tech company, the time it takes for 1 worker to build a PC is a random variable with an AVERAGE…

A:

Q: Consider a gamble with a 40% chance of winning $10 and a 60% chance of losing $10. What is the…

A: Given data: The given chance of winning is P(W)=40%=0.40. The given chance of losing is…

Q: There are 350 dogs at a dog show, who weigh an average of 15 pounds with a standard deviation of 7…

A: Given,sample size(n)=40mean(μ)=15standard deviation(σ)=7

Q: A population has a standard deviation of 18. On average, how much differece should exist for a…

A:

Q: Suppose the country club bills based on a sample of 4 members are: 410, 1,089, 637, 961. What is the…

A: Given information- We have given the country club bills based on a sample of 4 members. 410, 1,089,…

Q: The American Automobile Association (AAA) reported that families planning to travel over the Labor…

A: Let X denotes the amount spent to travel over the Labor Day weekend and it follows normal…

Q: 2. A district supervisor of a certain school surveyed 28 randomly selected teachers and found that…

A: For the given problem determine the appropriate test statistics

Q: A recent Gallop Poll indicates that 80 % of voting age adults disapprove of Congress. If 700 voting…

A: Let p be the probability that a voting age adult disapproves of Congress. Given that p = 0.80 Let X…

Q: Based on annual driving of 14,000 miles and fuel efficiency of 20 mpg, a car in the United States…

A: Solution: Let X be the number of gallons per year. From the given information, X follows normal…

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

A:

Q: What is the standard deviation of the number of burglarized houses? What is the probability that…

A: Given : The probability that a house in an unban area will be burglarized is 5% . A sample of 50…

Q: The American Automobile Association (AAA) reported that families planning to travel over the Labour…

A:

Q: statewide, social workers average 10.2 years of experience. In a random sample, 203 social workers…

A: State the hypotheses.

Q: An Internet provider contacts a random sample of 300 customers and asks how many hours per week the…

A:

Q: In a certain supermarket, a sample of 60 customers who used a self-service checkout lane averaged…

A: Introduction: Assume that the checkout times of the customers are independent of each other, between…

Q: he monthly utility bills in a city are normally​ distributed, with a mean of $100 and a standard…

A: Let X be the monthly utility bills in a city are normally distributed with mean μ=$100 and standard…

Q: In testing a specific vehicle tire over rugged terrain, it is found that 20% of the vehicles fall to…

A: Given that n =15 and p = 20%=0.20.

Q: ) H0: ?1 − ?2 = 0 Ha: ?1 − ?2 > 0     t=_________ P-value_______   State the conclusion in the…

A:

Q: The Public Service Student Loan Forgiveness program states that the average amount of student loan…

A:

Q: According to the St. Lucie Economic Development Council, the average household income in St. Lucie…

A: Given Mean=45775 Standard deviations=1830

Q: oup of 10 friends played a mini-golf competition. Eight of the friends tied for second place, each…

A: Given: Let the missing score be a. The data for scores (X) is shown below 34 34 34 34 34…

Q: According to police sources, a car with a certain protection system will be recovered 90% of the…

A: Given problem is a binomial distribution with:

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

A:

Q: Suppose 36% of movie goers say comedy is their favorite genre. If a random sample of 120 movie goers…

A: Obtain the mean number of movie goers that prefer comedy. The mean number of movie goers that prefer…

Q: The owner of a small convenience store is trying to decide whether to discontinue selling magazines.…

A: From the provided information, 5% of the customers buy magazines and thinks that he might be able to…

Q: In a certain experiment M & M candies are randomly grouped in bags of 40 pieces per bag. If 16 % of…

A:

Q: Suppose the heights of 18 year old men are approximately normally diatributed, with mean 67 inches…

A: Mean = 67 Standard deviation = 5

Q: There is an 85% chance that a randomly selected person will take their own re-usable bags to the…

A:

Q: Five students took a self-confidence test. Their deviation scores were –4, +3, +1, –2, and +2.…

A: Given ,deviation scores were –4, +3, +1, –2, and +2

Q: Salvatore, as the director of a regional bank, is concerned about the wait times of customers at the…

A: 48 patrons at each branch selected, For each branch means and standard deviation mentioned. We have…

Q: What is the standard deviation (sd) of the number of  cardinal birds observed?

A:

Q: A college wants to determine if the grade in a Physlcs higher if they make Calculus 1 a perquisite…

A:

Q: Suppose population 1 is all blue cars sold at used car auctions, and the mean sale price of all such…

A: Given  Sales of red cars and blue cars and few other parameters.we need to find whether it has 2…

Q: Furnace repair bills are normally distributed with a mean of 267 dollars and a standard deviation of…

A: Let us denote: X=Furnace repair billsGiven that X follows a normal distribution with mean=267 and…

Q: A report from the Illinois Department of Wildlife indicates that when a car and deer collide, there…

A: Given: 40 deer fatalities per 100 collisions between a car and a deer

Q: Nationally, the population as a whole watches 6.2 hours of TV per day. A random sample of 1,017…

A: Nationally, the population as a whole watches 6.2 hours of TV per day. Suppose, X be the daily…

Q: One researcher collected a sample of expenses for advertisement from 5 companies as follows: 50, 60,…

A:

Q: We learned in Exercise 4.18 that about 90% of American adults had chickenpox before adulthood. We…

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: According to the 2016 National Survey on Drug Use and Health, 6.5% of teenagers aged 12-17 used…

A:

Q: A publisher is interested in the effects on sales of college texts that include more than 100 data…

A: Lets the sample mean and sample standard deviation for sample with more than 100 data file is…

Q: Furnace repair bills are normally distributed with a mean of 269 dollars and a standard deviation of…

A: Given: Population meanμ=269Sample size(n) =64Population standard deviationσ=20 Consider X be the…

Q: A realtor claims that in a certain neighborhood, the average house is worth $200,000. Having been…

A: