Question

A population of scores has a mean of 44. In this population a score of X=...

A population of scores has a mean of 44. In this population a score of X= 40 corresponds to z = -0.50. What is the population standard deviation?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Answer:-

Given That:-

A population of scores has a mean of 44. In this population a score of X= 40 corresponds to z = -0.50.

A population of scores has Mean

A population of score,

Corresponds to

What is the population standard deviation?

Now, we have to find out the population Standard deviation :-

we know the formula for Z is

Now,

  

  

  

population Standard deviation

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
3. A population of scores has µ = 44. In this population, a score of X...
3. A population of scores has µ = 44. In this population, a score of X = 40 corresponds to z = –0.50. What is the population standard deviation?​ a. 2​ b. ​4 c. ​8 d. ​-8 4. Last week Tim got a score of X = 54 on a math exam with µ = 60 and σ = 8. He also got X = 49 on an English exam with µ = 55 and σ = 3, and he...
6.A population has a mean of μ = 60 and a standard deviation of σ =...
6.A population has a mean of μ = 60 and a standard deviation of σ = 12. a.For the population, find the z-score for each of the following X values. X = 69: z =_____X = 84: z =_____X = 63: z =_____ X = 54: z =_____X = 48: z =_____X = 45: z =_____ b.For the same population, find the score (X value) that corresponds to each of the following z-scores. z = 0.50: X=_____ z = 1.50:...
For a population with a mean of u = 100 and a standard deviation of o...
For a population with a mean of u = 100 and a standard deviation of o = 20 a. Find the z-score for each of the following X values. X = 108 X = 115 X = 130 X = 90 X = 88 X = 95 b. Find the score ( X value) that corresponds to each of the following z-scores. z = -0.40 z = -0.50 z = 1.80 z = 0.75 z = 1.50 z = -1.25
In a distribution of scores, X = 64 corresponds to Z = 3.00, and X =...
In a distribution of scores, X = 64 corresponds to Z = 3.00, and X = 28 corresponds to a Z score of Z = 1.5. Find the mean and standard deviation for this distribution.
True or False: a.) Variance is the mean of the squared deviation score. b.) For any...
True or False: a.) Variance is the mean of the squared deviation score. b.) For any population, a z-score of +1.00 corresponds to a location above the mean by one standard deviation. c.) In a distribution with s=8, a score of X=64 corresponds to z=-.50. The mean for this sample will be M=60. d.) Transforming X values into z-scores will not change the shape of the distribution. e.) One advantage of transforming X values into z-scores is that the transformation...
4.For a population with a mean of μ = 40 and σ = 11, find the...
4.For a population with a mean of μ = 40 and σ = 11, find the z–score for each of the following X values. (Note: You probably will need to use a formula and a calculator to find these values) X = 45: z =_____ X = 52: z =_____X = 41: z =_____ X = 30: z =_____X = 25: z =_____X = 38: z =_____ 5. For a population with a mean of μ = 100 and a...
For a population with a mean of LaTeX: \muμ= 100 and a standard deviation of LaTeX:...
For a population with a mean of LaTeX: \muμ= 100 and a standard deviation of LaTeX: \sigmaσ=20, Find the X values that corresponds to each of the following z-scores: z = -.40 z = -.50 z= +1.80 z = +.75 z = +1.50
Test D: population mean  = 150 and standard deviation  = 20. Danyang’s test score...
Test D: population mean  = 150 and standard deviation  = 20. Danyang’s test score is X = 140. D1.1. Draw the normal curve for this distribution. D1.2. State the value of a score X in the distribution that corresponds to the 99.87th percentile rank. D1.3. Compute the person’s z-score. D1.4. Write an X in the distribution’s horizontal axis where the person’s score is located. D1.5. State the area (proportion) of the curve between the mean  and the...
A distribution of scores has a mean of LaTeX: \muμ= 80. If your score is X...
A distribution of scores has a mean of LaTeX: \muμ= 80. If your score is X = 72, which standard deviation would give you a better grade: LaTeX: \sigmaσ= 4 or LaTeX: \sigmaσ= 6? If your score is X = 90, which standard deviation would give you a better grade: LaTeX: \sigmaσ= 5 or LaTeX: \sigmaσ= 10?
It is assumed that individual IQ scores (denoted as X) are normally distributed with mean (µ)...
It is assumed that individual IQ scores (denoted as X) are normally distributed with mean (µ) and standard deviation (σ) given as µ = 100 and σ = 15 Use normal table and conversion rule to answer questions below. 1. Find proportion of individuals with IQ score below 109 2. Find a chance that a randomly selected respondent has the IQ score above 103 3. What proportion of individuals would be within the interval (97 ≤ X ≤ 106) 4....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT