QUESTION 16 "A population of score is normally distributed and has a mean = 172 with standard deviation = 34. If one score is randomly selected from this distribution, what is th probability that the score will have a value between X = 80 and X = 156? (Please input answer as a probability with four decimal places)."

Q: Question 9 Suppose the age that children learn to walk is normally distributed with mean 12 months…

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Q: CNNBC recently reported that the mean annual cost of auto insurance is 1015 dollars. Assume the…

A: Given that mean =1015 ,s.d =264

Q: Question 16 Suppose that the duration of a particular type of criminal trial is known to be normally…

A: Solution

Q: Suppose that the amount of time that students spend studying in the library in one sitting is…

A: We have given that a random variable X i.e, the amount of time is normally distributed with mean 45…

Q: Question 4 According to a college survey, 67% of all students work full time. Find the standard…

A: As per our guidelines, we can solve only the first question. Kindly, repost the other for an answer.

Q: QUESTION 7 Select the CORRECT statements. It is usually a good idea to have less than 4 classes in a…

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Q: QUESTION 31 "A population of score is normally distributed and has a mean = 172 with standard…

A: Formula : Z =(X - μ)/σ

Q: Compute the z score value for a score of 85 on a test which has a mean of 75 and a standard…

A: Given:  Random score x with mean mu=75 and standard deviations σ=5  To find Z score of random score…

Q: Question 4 After some time has passed, all of the chickens lay full-sized eggs. (When chickens first…

A: A normal distribution is a continuous probability distribution that makes a bell-shaped curve of the…

Q: Question 36 Create a 80% confidence interval for a population mean from a sample of size 61 with…

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Q: Question 9 of 15 Based on Empirical Rule, how many percent will lie between -3 to +3? Select the…

A: Z be the random variable from normal distribution,  Then,  We will check the correct options?

Q: In recent years, about two-thirds of U.S. households purchased ground coffee. Consider the annual…

A: From the given information, let X be a random variable which is the expenditure of ground coffee for…

Q: Question 2: Scores on a history test have average of 55 with standard deviation of 10. What is the…

A: The mean is 55 and standard deviation is 10. The z-score for a student who earned a 95 on the test…

Q: Question #2 A normal distribution has a mean of 45 (μ = 45) and a standard deviation of 10. At what…

A: Note: According to Bartleby guidelines expert solve only one question and rest can be reposted

Q: students spend studying in the library in one sitting is normally distributed with mean 44 minutes…

A: As per guidelines expert have to answer first question three subparts only dear student please…

Q: In a recent year, about two-thirds of U.S. households purchased ground coffee. Consider the annual…

A: μ = 45.16σ = 10.00x = 50.00

Q: Question 3: Let x be a continuous random variable that follows a normal distribution with a mean of…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Question 2: Scores on IQ tests have a bell-shaped distribution with mean deviation o = 15. Discuss…

A: Let X be the scores on IQ tests, that follows normal distribution (bell shaped) with μ=100 and σ=15.

Q: Question 2: observed for a long period of time and found to have a mean of 20 customers. The exact…

A: Given : The number of customers per day at a certain sales counter X, has bee observer for a long…

Q: Question 2 of 9 (i point) A sample of size 190 will be drawn from a population with mean 45 and…

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Q: Question 34 In terms of probability related to a distribution of sample means, why is it that is it…

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Q: Scores on a history test have average of 80 with standard deviation of 5. What is the z-score for a…

A: Let X represents the score on a history test. Given that, Mean=μ=80Standard deviation=σ=5

Q: 2. An employee takes time of her trip from her home to office as normally distributed with a mean of…

A: Obtain the proportion of her trip takes between 25 and 29 minutes. The proportion of her trip takes…

Q: QUESTION 2 The IQ test has a mean of 100 and a standard deviation of 15. Suppose a simple random…

A: Given data is appropriate for testing of hypothesis to test for z-test for single mean. Because it…

Q: QUESTION 14 You have measured 35 different quantities (X, Y, of each a large (n-1000) collection of…

A: Consider N be the number of false positives. The number of pairs are 35C2

Q: • Question 6 About 8% of the population has a particular genetic mutation. 500 people are randomly…

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Q: QUESTION 7 Suppose than an exam had a mean score of 79, with a standard deviation of 12. Use…

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Q: Question 2 (Chp.7) If the duration of lung cancer from the onset of symptoms until death ranges from…

A:

Q: QUESTION 31 "A population of score is normally distributed and has a mean = 142 with standard…

A: 31)Given X is normal Distributed with mean µ = 142.0 and standard deviation σ = 33.0 now will using…

Q: chapter 7, question 8 The lengths of adult males' hands are normally distributed with mean 186 mm…

A: We have given that.    X~N( μ , ?^2 )    μ = 186    , ? = 7      n=40   Z-score =( x - μ )/?…

Q: The amount of syrup that people put on their pancakes is normally distributed with mean 63 mL and…

A: GivenMean(μ)=63standard deviation(σ)=12sample size(n)=43

Q: day is normally distributed with a mean of 16 ounces and a standard deviation of 6 ounces. 32…

A: As per guideline expert have to answer first three subpart only dear student please upload other…

Q: Question 8 > A company produces steel rods. The lengths of the steel rods are normally distributed…

A: Given,sample size(n)=7mean(μ)=133.2standard deviation(σ)=2

Q: If the probability of engine malfunction during any one hour period is p = 0.02 and Y denotes the…

A: Given data, the probability of engine malfunction during any one hour period is p = 0.02 Let Y…

Q: During 2008, college work-study students earned a mean of $1478. Assume that a sample consisting of…

A: The hypotheses are given below:Null hypothesis:H0:µ=1478.Alternative hypothesis:H1:µ>1478. The…

Q: Question 11   In a recent year, about two-thirds of U.S. households purchased ground coffee.…

A:

Q: "A population of score is normally distributed and has a mean = 160 with standard deviation = 48. If…

A: It is given that the mean is 160 and the standard deviation is 48.

Q: Question 4)  According to the Department of Health, Statistics Students sleep an average of 8 hours…

A: Given: μ=8σ=1.5 The probability that a randomly selected statistics student sleep less than 6 hours…

Q: Let x be a continuous random variable that is normally distributed with a mean of 60 and a standard…

A: According to the given information, we have Let x be a continuous random variable follows normal…

Q: Question 3: Scores on a history test have average of 80 with standard deviation of 5. What is the…

A: Given : Let X : Scores on a history test with Mean (μ)=80 Standard deviation (σ)=5

Q: QUESTION 4 The national IQ test has a mean of 100 and a standard deviation of 15. Suppose a simple…

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Q: QUESTION 8 Supposa that total cholesterol in US men aged 35-44 can be modeled by a normal…

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Q: Question 5 A particular fruit's weights are normally distributed, with a mean of 695 grams and a…

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Q: Find the probability that a randomly selected quartz time piece will have a replacement time less…

A: Mean(µ) = 17.9Standard deviations (σ) = 1.1X ~ N (µ, σ )= N (17.9,1.1)

Q: QUESTION 3 Two classes A and B of 200 students each take the same examination, out of 100 points.…

A: We can find probability using z table.

Q: Question 2: A random variable is distributed normally with mean 3200 and standard deviation 800.…

A:

Q: Question 1. A manufacturer knows that their items have a normally distributed lifespan, with a mean…

A: As per our guide lines we are suppose to answer only one question. Given,mean(μ)=6.4standard…

Q: Question 5 A leading magazine (like Barron's) reported at one time that the average number of weeks…

A: Given that.   X~N( μ , ?^2 )   μ=27  , ?=5    ,n=8   Z-score =( x - μ )/?

Q: Question #2)  According to the Department of Education, 11% of adults have an advanced degree.…

A:

Q: Question 5 A particular fruit's weights are normally distributed, with a mean of 744 grams and a…

A: Given X is normal Distributed with mean µ = 744.0 and standard deviation σ = 14.0 ,n=14 now will…