Suppose that X is normally distributed with a mean 90 and standard deviation of 28. A. What is the probability that X is greater than 130.6? Probability = B. What value of X does only the top 14% exceed? X =

Q: Q1) Suppose that blood chloride concentration (mmol L) has a Normal distribution with mean 104 and…

A: Givenmean(μ)=104standard deviation(σ)=5

Q: Given a normal distribution with a mean of 150 and a standard deviation of 10, what is the…

A: Given,   Mean = 150 Standard deviation = 10

Q: Assuming that the scores of the student in a test are normally distributed with the mean of 40 and…

A: Given data mean =40 ,standard deviation =6

Q: A normal distribution has a mean of μ =64 and a standard deviation of σ = 8. What is the probability…

A: Obtain the standard z-score for the random variable M equals 72 The standard z-score for the random…

Q: Suppose x has a distribution with mean =30 and standard deviation 28    P(30<x<32)=

A: Given,  mean μ=30 standard deviation, σ = 28 X ~ N(μ, σ)

Q: Given that x is distributed normally with mean 74 and standard deviation 10, what is P(72 < x < 82)…

A:

Q: Suppose that the cost of annual tuition at colleges is normally distributed, with an average annual…

A: Denote X as the cost of annual tuition at colleges. It is given that X is normally distributed, with…

Q: An entrance examination is to be conducted to 1600 ncoming freshmen students at Gordon college which…

A: Let X be the variable denoting score of the exmination. X ~ N (μ, σ) Given mean, μ = 85 standard…

Q: A survey of 1000 men ages 20 to 30 found that their heights were normally distributed, with a mean…

A: Solution: Let X be the height of men ages 20 to 30. From the given information, X follows normal…

Q: suppose that ? is normally distributed with mean of 105 and standard deviation of 28. A. What is…

A: suppose that x is normally distributed with mean of 105 and standard deviation of 28.

Q: For a population with a standard deviation of σ = 20, how large is a sample  necessary to have a…

A: The standard deviation is 20.

Q: Given a normal distribution with a mean of 150 and a standard deviation of 10, what is the…

A: Let X be a continuous random variable is normally​ distributed with a mean of 150 and a standard…

Q: 8, and the sample standard deviation, s, is found to be 4.6. ...

A:

Q: A set of exam scores is normally distributed and has a mean of 78.1 and a standard deviation of 8.1.…

A: We have given that , Mean = 78.1 , Standard deviation = 8.1 , X = 60

Q: Suppose that the average amount of ice cream that children eat at birthday parties is 3.6 oz, with a…

A: a. Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: 2. Given a standard deviation of 3.7, what is the mean if1 0% of the population has a distribution…

A: We have given that,  Let x be the random variable from normal distribution with standard deviation…

Q: A normal distribution has a mean of μ =72 and a standard deviation of σ = 8. What is the probability…

A: Given, μ=72σ=8n=36M=x=72

Q: Suppose that quiz scores in a beginning statistics class have a mean of 6.56.5 with a standard…

A: The Chebyshev's theorem states that at least 1-1k2 of the observations falls within k standard…

Q: Suppose that 100,000 recent grads have starting salaries which are normally distributed with a mean…

A: Given that  μ=120,000σ=20,000 b) Consider the probability that the salary above $131,200 is,…

Q: 3. The amount dispensed by the coffee machine follow the normal distribution with a mean of 5,286…

A:

Q: The spending at Target is distributed normally with a mean spending of $45.67 and a standard…

A: According to the provided information, mean = $45.67  standard deviation = $5.50

Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $6000 and a…

A: Note: Hey as per our honor code i can answer only three sub parts. Thanx

Q: A population is normally distributed with a mean of 50 and a standard deviation of 10. Find the…

A: Given data,Mean μ=50sd    σ=10P(X&lt;44)=?

Q: A midterm exam has a mean of 76.0 and a standard deviation of 8.0. If any student with a z-score of…

A:

Q: Find the indicated probability. The weekly incomes of a summer intern in Tesla are normally…

A: Given data,Mean μ=1500sd    σ=300P(X&lt;1200)=?

Q: A large normally distributed population has a mean of 502 and a standard deviation of 25. If the…

A:

Q: The spending at Target is distributed normally with a mean spending of $47.67 and a standard…

A:

Q: A normal distribution has a mean of μ= 54 and a standard deviation of σ=6 What is the probability of…

A: The sample size is, n = 36 The values of mean and standard deviation of the sampling distribution…

Q: You know that boys’ heights are distributed normally with a mean of 70" and a standard deviation of…

A: From the given information,   Mean = 70 Standard deviation = 3

Q: 19. If the mean is 19 and a standard deviation is 3.7 for a normally distributed variable, what is…

A: Here we need to find the z score corresponding to 14.9.

Q: A normal distribution has a mean of 54, and a sttandard deviation of 6. What is the probability of…

A:

Q: Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(xs 53)?

A:

Q: Suppose x is a value in a normal distribution, with a mean of 12, and standard deviation of 4, What…

A: Given: x=4μ=12σ=4 The z score of x=4 is obtained as follows: Z=x-μσ=4-124=-84=-2 Thus, the z-score…

Q: Q2: The life of a semiconductor laser at a constant power is normally distributed with a mean of…

A:

Q: (O) What is the standard deviation of a distribution that has a mean of 46.2 if a PERFORMANCE value…

A: From the provided information, Mean (µ) = 46.2 Performance value (x) = 28 Z score = -1.24

Q: . If the probability of a defective bolt is 0.1, find (a) the mean (b) the standard deviation for…

A:

Q: The exam scores of 200 students are distributed normally with a mean of 72 and a standard deviation…

A: Total students = 200 Standard deviation = 10 And distribute mean = 72 We have to find the number of…

Q: MCAT scores are normally distributed with a mean of ? ​​= 501.5 and a standard deviation of ? =…

A: Given: Population mean μ = 501.5 Population standard deviation σ = 10.7 Formula Used: Z-score = X-μσ

Q: A firm’s marketing manager believes that total sales for next year will follow the normal…

A: Given information- Population mean, µ = $3200,000 Population standard deviation, σ = $250,000 We…

Q: The standard deviation of a normal random variable X is $50 . Given that P(X ≤ $40) = .25, what is…

A: Given data,σ=50x=40P(X ≤ $40) = .25μ=?

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 65…

A: Given information- Mean, μ = 65 Standard deviation, σ = 4 a) The percentage of scores that were…

Q: average GPA of 2.78 with a standard deviation of 0.45.

A: Given that  GPA is normally distributed . A sample of university students has an average GPA of 2.78…

Q: The mean is µ = 15.2 and the standard deviation is Η = 0.9. Find the probability that X is between…

A:

Q: What is the z score of x = 9, if it is 1.5 standard deviations to the right of the mean?

A: Given X = 9 also  X = μ + 1.5 (σ) --1

Q: For a sample, a score that is 12 points above the mean has a z-score of z = 1.20. What is the sample…

A: We have to find sample standard deviation

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 60…

A:

Q: The IQ scores of a large group of students are approximately normally distributed with a mean of 100…

A:

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A:

Q: In a distribution with a mean of 80 and a standard deviation of 8, what percentage of number would…

A: a. The mean is 80, and standard deviation is 8. The percentage of number would be less than 64 or…