a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a mean of 67.2 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Complete parts​ (a) through​ (d) below.       Question content area bottom Part 1 ​(a) Find the probability that a study participant has a height that is less than 65 inches.   The probability that the study participant selected at random is less than 65 inches tall is 0.2912   0.2912. ​(Round to four decimal places as​ needed.) Part 2 ​(b) Find the probability that a study participant has a height that is between 65 and 71 inches.   The probability that the study participant selected at random is between 65 and 71 inches tall is 0.5377   0.5377. ​(Round to four decimal places as​ needed.) Part 3 ​(c) Find the probability that a study participant has a height that is more than 71 inches.   The probability that the study participant selected at random is more than 71 inches tall is 0.1711   0.1711. ​(Round to four decimal places as​ needed.)

Q: widgels. process is working properly, it turns out that tne widgets are normally distri with a mean…

A: Given : n=25 , X-bar=2.46  , s=0.16 , μ0=2.6 , α=0.05 Since , the population standard deviation (σ)…

Q: Rent for two-bedroom apartments in Davis, CA, follow a normal distribution with mean of $2,200 and…

A:

Q: Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 69…

A: Solution:The empirical rule for any normal distribution is given below.68% of the observations fall…

Q: A class of students took an exam.  The professor noticed that, overall, as a class, they did well…

A: Measure of central tendency measures the central or average value of a dataset. Measures of…

Q: At a=0.05, what is the critical value? -1.984 1.66 -1.645 -1.66

A:

Q: 500 freshmen at Arundel University took part in a math comprehension test. The scores were normally…

A: Given: μ=75 and σ=7. The z-score is calculated asz=x-μσ

Q: The SAT and ACT college entrance exams are taken by thousands of students each year. The scores on…

A: (a) Obtain the percent of students would score less than 550 in a typical year. The percent of…

Q: Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of…

A: a) Suppose that µ is the population mean number of gallons of gasoline sold to customers.

Q: Tallest and Shortest Men the tallest living man at the time of this writing is Sultan Kosen, who has…

A: Given that  Tallest = 251 , Shortest = 54  Mean = M = 174 , Standard deviation = SD = 7

Q: (a) The sampling distribution of x is (Type exact answers, using radicals (b) P(x- (Round to four…

A:

Q: Bundles of firewood are normally distributed with a mean of 20 pounds, and a standard deviation of 2…

A:

Q: A dataset that contains credit card balances has a population mean of $2870 and a population…

A: Given,mean(μ)=2870standard deviation(σ)=900sample size(n)=81

Q: The heights of adult males in the United States are approximately normally distributed. The mean…

A: Mean(µ) = 70Standard deviations (σ) = 3X ~ N (µ, σ )= N(70, 3)

Q: n variable.

A:

Q: Saoirse took 3 classes in a semester.   The class means and standard deviations are given below:…

A:

Q: In a random sample of 50 adults, the mean body mass index (BMI) was 27.7 and the standard deviation…

A:

Q: Male students in a Calculus 1 course at ASU self-reported their heights in inches. The data below…

A: Given the data of a Calculus 1 course male students height in inches asHeight in…

Q: For a sample of 11 employees, the most recent hourly wage increases were 18, 30, 25, 5, 7, 2, 20,…

A: Given data , 18, 30, 25, 5, 7, 2, 20, 12, 15, 25,40

Q: Suppose the mean starting salary for nurses is $66,613 nationally. The standard deviation is…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: An electrical firm manufactures light bulbs for LCD projectors. A randomly selected sample of 24…

A: Given that  Ransom sample size (n) = 24 Mean life span (x¯) = 600 hours Standard deviation (s) = 50…

Q: The salary for workers at a company are normally distributed with a mean of $60,000 and a standard…

A:

Q: Llamas are excellent pack animals. It is known that the weight of supplies carried by llamas follows…

A: The standard normal z score formula is defined as shown below    Where, x = random value…

Q: Do people walk faster in the airport when they are departing​ (getting on a​ plane) or do they walk…

A: Given, α=0.05 μ1 = represent the mean speed of people departing and μ2 = represent the mean speed of…

Q: Consider a sample with data values of 26,24,21,17,30,33,28 and 24 . Compute the variance, and…

A: A set of data values is given.The data values are 26, 24, 21, 17, 30, 33, 28 and 24.

Q: The SAT Math scores have a bell-shaped distribution with a Mean of 567 and a Standard Deviation of…

A: We have given that,  Let the SAT scores are normally distributed with mean (mu) = 567 and standard…

Q: The commute tỉme for Cypress College students who drive from their home to the college follows a…

A: Here, µ = 26 and σ = 8.

Q: The weekly incomes of a large group of executives are normally distributed with a mean of $2,000 and…

A: Let X be the random variable from normal distribution with mean (μ) = $ 2000, standard deviation (σ)…

Q: The commute time for Cypress College students who drive from their home to the college follows a…

A:

Q: The smallest numeric value in a data set subtracted from the largest is the: a. variance. O b.…

A: We have to find the term which is the difference between the largest value and the smallest value.

Q: ing above one of the data points in th

A: mean  = 9 standard deviation = 2.5 to find P(X>11)

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

A: Given,mean(μ)=67.7standard deviation(σ)=4

Q: Salaries for teachers in a particular elementary school district are normally distributed with a…

A: Given information- Population mean, μ = $41,000 Population standard deviation, σ = $6,200 Sample…

Q: An ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. An…

A: The standard deviation is 1,350.

Q: A large corporation employs 21,995 individuals. The average income of all employees is $64,372, with…

A: The population mean is denoted by μμ. The population standard deviation is denoted by σσ. Sample…

Q: A student randomly selects 10 paperbacks at a store. The sample standard deviation is $1.50.…

A: Solution To find confidence interval we will use chi square distribution.

Q: Response time is an important statistic for measuring the effectiveness of a fire department, and is…

A: Solution: Let X be the response time. From the given information, X follows normal distribution with…

Q: The grade point averages (GPA) of 15 randomly selected college students are 2.3, 3.3, 2.6, 1.8, 0.2,…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Time to Complete Final Exam. The time needed to complete a final examination in a particular college…

A: Let X be the time needed to complete a final examination. It is given that X follows a normal…

Q: Based on data from the 2000 Census the average age of a Baldwin County, Alabama resident is 39 years…

A: We have given that the mean age of Baldwin County, Alabama resident is 39 years with standard…

Q: If you periodically collect samples of 25 undergraduates, how much will the sample mean vary from…

A: Consider X as a random variable that denotes the cost of attendance for undergraduates in the US.…

Q: The scores of individual students on the American College Testing (ACT), a college readiness…

A: Given data The scores of  individual students has a  mean of 18.6 and a standard deviation of 6.0.…

Q: Use the magnitudes​ (Richter scale) of the 120 earthquakes listed in the accompanying data table.…

A: Here given the data of magnitudes of 120 earthquakes. need to find the range variance and standard…