A random normal variable X has a mean of 15500 and a standard deviation of 1500. Find a value of x such that only 1% of the values are greater than that value

Q: a normal distribution has a mean of 60 with a standard deviation of 8. for this population, which is…

A: Solution

Q: What z-score would be associated with the value x = 124?

A: Given that Mean = 133 SD = 6 And the value is X = 124

Q: What z-score would be associated with the value x = 143?

A: Given that Mean = 137 SD = 15 And the value X = 143

Q: A normal distribution has a mean of 20 and a standard deviation of 4. Determine the z-score for the…

A: Given that a normal distribution has a mean of 20 and a standard deviation of 4.  We need to…

Q: A population has a mean of μ=50 and a standard deviation of sigma=10. a. If 3 points were added to…

A: Given: Population mean (µ) = 50 Population standard deviation (σ) = 10

Q: If X has a normal distribution of a mean of 70 and a standard deviation of 10, then the area under…

A:

Q: A given distribution has a population mean, μ, of 114 and a population standard deviation, σ, of 12.…

A:

Q: A given distribution has a population mean, μ, of 116 and a population standard deviation, σ, of 8.…

A: From the provided information,

Q: A normal population has a mean of 20.0 and a standard deviation of 4.0. Compute the z value…

A:

Q: A distribution is given as X ~ U(0, 12). What is the theoretical standard deviation?

A: concepts and reasonuniform distribution is a continuous probability distribution.it is defined…

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(0…

A: The z-scores are normally distributed with mean 0 and standard deviation 1 Given , P( 0 < z <…

Q: A score that is 6 points below the mean correspond. to a z-score of z = -2.00. What is the…

A: The following is the formulae for z-score                       i.e., z=X-μσ Here, X is variable…

Q: deviation

A: Let X = IQ of an individual. IQ of the ruling species is normally distributed with a mean of 118 and…

Q: A population has a mean of 50 and a standard deviation of 20. Would a score of x=70 be considered an…

A: The mean and standard deviation are 50 and 20.

Q: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.…

A: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.

Q: Given a population distributed normally  with a mean of 81 and a standard deviation of 20, find x…

A:

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<44)=?

Q: The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a…

A: GivenMean(μ)=3000standard deviation(σ)=500

Q: A score that is 6 points below the mean corresponds to a z-score of z = -1.50. What is the…

A: We have to find population standard deviation from given information. We need to use z score…

Q: A score that is 9 points above the mean corresponds to a z-score of z = 1.50. What is the population…

A:

Q: A random normal variable X has a mean of 15500 and a standard deviation of 1500. Find a value of x…

A:

Q: Assume the random variable X is normally distributed with a mean of 50 and a standard deviation of…

A:

Q: A population has a standard deviation of 18 on average how much difference should exist for a random…

A: From the provided information, Population standard deviation (σ) = 18 Sample size (n) = 36

Q: A sample of 200 people has a mean age of 21 with a population standard deviation (σ) of 5. Test the…

A: Given: Sample size(n)=200Sample mean(x¯)=21Population mean(μ)=18.9Population Standard deviation(σ)=5

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

A:

Q: Assume that X is normally distributed with a mean of 12 and a standard deviation of 4. Determine…

A:

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, what value…

A: X follows a Normal distribution with mean = 35 and S.D = 7.5 Then z=(x-mean)/SD = (x-35)/7.5…

Q: A population is normally distributed with a mean of 20.  What is the population standard deviation…

A:

Q: A normal distribution has a mean of u=54 and a standard deviation of o=6, what is the probability of…

A: Let "X" be the raw score.

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

A:

Q: What z-score would be associated with the value x = 172?

A: Given that Mean = 112 SD = 10 And value X = 172

Q: Assume X is normally distributed with a mean of 10 and a standard deviation of 2.1. Determine

A:

Q: If x is normally distributed with a mean of 5 and standard deviation of 2, find the P(x>8).

A:

Q: As the sample size (n) increases, the standard deviation of x from that sample decreases, this…

A: Hello! As you have posted 3 different questions, we are answering the first question (8). In case…

Q: A population has a standard deviation of 18 on average how much difference should exist for a random…

A: A population has a standard deviation of 18.

Q: A normal distribution has a mean of 148 and a standard deviation of 5. Find the z-score for a data…

A: Solution: Let X be the data value. From given information, X has mean µ=148 and a standard deviation…

Q: A random normal variable X has a mean of 15500 and a standard deviation of 1500. Find a value of x…

A: Given: μ=15500 and σ=1500 Also, it is given that-PX>x=PZ>z=0.01…

Q: A population has a mean of μ and a standard deviation of  . a. If 3 points were added to every…

A:

Q: A normal distribution has a mean of 60 and a standard deviation of 2.  Determine the z-score for the…

A: Given data, Mean=60 sd=2 x=22 z=?

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: With a mean of 10 and standard deviation of 5. Assume that the population data are normally…

A: The mean is 10 and the standard deviation is 5.

Q: A given distribution has a population mean, μ, of 142 and a population standard deviation, σ, of 10.…

A: It is given that the mean (µ) is 142 and the standard deviation (σ) is 10 and score, x is 110.

Q: In a population that is normally distributed with a mean X and standard deviation Y, determine the…

A: Empirical rules :1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3) P(μ-3σ<X<μ+3σ)=99.7%

Q: A normal distribution has a mean of 77 and a standard deviation of 6. Find the z-score for a data…

A: z score: Consider X as a normally distributed random variable, with mean μ and standard deviation…

Q: A normal distribution has a mean of 103 and a standard deviation of 3. Find the z-score for a data…

A: Solution: From the given information, µ=103 and σ=3.

Q: Given a normal distribution with a mean of 130, and a standard deviation of 4.5, find the value of a…

A: Z-score corresponding to a normal variable value X is      (X-mu)/sigma Where,      X = normal…

Q: A distribution has a population mean of 15 and a population standard deviation of 4. If X is a…

A: