Ages of Proofreaders At a large publishing company, the mean age of proofreaders is 36.2 years and the standard deviation is 3.7 years. Assume the variable is normally distributed. Round intermediate z-value calculations to two dećimal places and the final answers to at least fo decimal places. Part: 0 / 2 Part 1 of 2 If a proofreader from the company is randomly selected, find the probability that his or her age will be between 34 and 35.5 years. P (34 < X < 35.5) !!

Q: Ages of Passenger Cars The average age of passenger train cars is  19.4 years. If the distribution…

A: From the provided information, Mean (µ) = 19.4 years Let the standard deviation be σ. X~N (19.4, σ)…

Q: A random sample of boarding school students was asked how many 8-ounce servings of soda they had…

A: a) In regression theory, dependent variable is the response variable, which is predicted using the…

Q: Use the body temperatures, in degrees Fahrenheit, listed in the accompanying table. The range of the…

A:

Q: On Assignment 11.15, you found the mean and standard deviation for X, the number of dots facing up…

A: Given: μ=3.5σ=1.7078

Q: If a one-person household spends an average of $76 per week on groceries, find the maximum and…

A: Let the random variable X is the amount of money spent by one - person household. The random…

Q: %23 4. %24 76 Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and…

A: The area to the right is 0.3949, which is equal to the area to the left of 0.6051 (=1–0.3949).

Q: Part a: The z-score corresponding to the oldest senator of age 87 is part b: the z- score…

A: We have given that,  X be the  random variable from normal distribution with mean (μ) = 60.5 and…

Q: Part A: find the range part b: find the variance and standard deviation part c: use the range rule…

A: HERE AS PER POLICY I HAVE CALCULATED THREE SUBPARTS PLZ REPOST FOR REMAINING   here given data(xi )…

Q: Next question Assume that adults have IQ scores that are normally distributed with a mean of µ = 105…

A: Given: Let X denote the IQ scores.  The random variable X is normally distributed with mean 105…

Q: Cardiovascular Disease Obesity is an important determinant of cardiovascular disease because it…

A: Given information: Average SBP for a 50 year old women=124 mmStandard deviation for SBP=14 mm

Q: Use the table to answer each question. Note: Round z-scores to the nearest hundredth and then find…

A: GivenMean(μ)=104standard deviation(σ)=16

Q: A recent study at a local university found that the average number of words a two-year old knows is…

A: Given Data: Let X be the random variable of average number of words that two year old knows. n=49 X~…

Q: Some sources report that the weights of full-term newborn babies in a certain town have a mean of 8…

A: Provided information is; Mean(μ) = 8 Standard deviation(σ) =1.2 Let , X be the random variable that…

Q: The breaking strengths of cables produced by a certain manufacturer have historically had a mean of…

A: Hi thank you for posting this question,  Since you have posted multiple subparts as per our policy…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days…

A: Let us assume that X denotes the length of pregnancies in the rural areas.It is given that X follows…

Q: Compute the mean and standard deviation of the random varlable with the given discrete probability…

A: According to the given information, we have The probability distribution table is given by, X…

Q: A company sells printers with a mean life of 2 years (24 months) and a standard deviation of 4…

A: GIVEN: mean = 24 months           standard deviation = 4 months

Q: Suppose that the lifetimes of a certain kind of light bulb are normally distributed with a standard…

A:

Q: Cardiovascular Disease Obesity is an important determinant of cardiovascular disease because it…

A: Given information: The SBP is normally distributed such that, Mean = 124 mm Hg, and standard…

Q: New-Home Prices If the average price of a new one-family home is $246,300 with a standard deviation…

A: Given Information: Mean (x) = $ 246300  Standard deviation (s) = $ 15000

Q: Ages of Passenger Cars The average age of passenger train cars is 19.4 years. If the distribution of…

A: From the provided information,The distribution of ages is normal and 7% of the cars are older than…

Q: Ages of Gamblers The mean age of a sample of 24 people who were playing the slot machines is 50.6…

A: Given,n1=24n2=32x1=50.6s1=6.8x2 =55.6s2=3.2α=0.10H0:μ1=μ2H1:μ1&lt;μ2

Q: Collect 50 data values of one variable and perform the following Minitab functions. Each function…

A: 50 data values are considered for salt as : ID sold 1 1.265 2 2.2 3 1.225 4 1.9 5…

Q: Typed plz and provide high quality solution and show every calculations and take care of plagiarism

A: The objective of the question is to find out the percentage of total production that the company…

Q: Tign pres of adults, and res are normally distributed with a mean of 100 and a standard deviation of…

A: Population mean=100 , population standard deviation =15

Q: USE THE FORMULAS AND SHOW ALL WORK WITH EACH FORMULA. WRITE YOUR ANSWERS ON THE LINES PROVIDED. ALL…

A: Given information- Population mean, µ = 18.9 minutes Population standard deviation, σ = 2.15 minutes…

Q: The average THC content of marijuana sold on the street is 10.8%. Suppose the THC content is…

A: Given, mean= 10.8  Standard deviation= 1 So, variance= 12=1 So, X~N(mean,variance)= N(10.8,1)…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A: From the provided information, Mean (µ) = 260 days Standard deviation (σ) = 16 days X~N (260, 16)

Q: Data from a state indicate that scores on the SAT test are normally distributed with a mean of 1008…

A: Given data Data from a state indicate that scores on the SAT test are normally distributed with a…

Q: ends enroll in the same math course at the university they are attending.  On the first exam Sam…

A: Given: Sam scores 35 (the mean in this class is 34 with a standard deviation of 15).   Thus,…

Q: Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 42,…

A: We have given that Mean(µ) = 42 Population Standard deviations (σ) = 24 Sample size (n) = 90

Q: Assume that a randomly selected subject is given a bone density test. Bone density test scores are…

A: GivenMean(μ)=0standard deviation(σ)=1

Q: c. What is the probability that one randomly selected person drinks between 16.5 and 17.4 ounces of…

A: c. The random variable X is defined as the amount of coffee that people drink per day which follows…

Q: Suppose in 2000, the science scores for female students had a mean of 146 with a standard deviation…

A: Mean(µ) = 146Standard deviations (σ) = 35X ~ N (µ, σ )= N(146, 35)

Q: In Country A, the population mean height for 3-year-old boys is 37 inches. Suppose a random sample…

A: GivenMean(x)=36.2standard deviation(s)=3sample size(n)=15significance level(α)=0.05

Q: Ages of Passenger Cars The average age of passenger train cars is  19.4 years. If the distribution…

A: Given μ=19.4x=22.8

Q: The song-length of tunes in the Big Hair playlist of a Statistics professor's mp3-player varies from…

A: Given that  the Normal distribution, with a mean song-length of μ=4.25 minutes and a standard…

Q: The weights of a certain dog breed are approximately normally distributed with a mean of 53 pounds,…

A: Mean(µ) = 53Standard deviations (σ) = 6.6X ~ N (µ, σ )= N(53, 6.6)

Q: Every year, the students at a school are given a musical aptitude test that rates them from 0 (no…

A: here we have to find out the sample standard deviation for given frequency distribution table . x…