A population of scores has a standard deviation of 5. In this population a raw score...
A population of scores has a standard deviation of 5. In this
population a raw score of 45 corresponds to a z
score of 1.5. What is the population mean?
Homework Answers
We know that a z-score is given by: 
where 
are raw score, population mean and population standard deviation
respectively.
Now, 
which is the population mean.
Add Answer to:
A population of scores has a standard deviation of 5. In this
population a raw score...
A population of scores has u = 80. In this population, a score of X -86...
A population of scores has u = 80. In this population, a score of X -86 corresponds to z = +2.00. What is the population standard deviation? Select one: a. 12
For a normal population with an average of 60 and a standard deviation of 12 what...
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3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the...
3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the z-scores corresponding to each of the following values: a. A score that is 3 points above the mean. b. A score that is 1.5 points below the mean. c. A score that is 2.25 points above the mean 4. Scores on BMCC fall 2017 MATI50.5 department final exam form a normal distribution with a mean of 70 and a standard deviation of 8. What...
IQ-scores are standard-score transformed scores having a mean of 100 and a standard deviation of 15;...
IQ-scores are standard-score transformed scores having a mean of 100 and a standard deviation of 15; SAT scores are standard-score transformed scores having a mean of 500 and a standard deviation of 100. In what follows, X refers to a raw score from a distribution with a mean of X and a standard deviation of S, and SAT and IQ refer to the corresponding transform of that score. Solve for the missing value in each of the following: (a) X=-2.5;Xmean=...
1. The raw scores on the standardized reading test are normally distributed so the raw scores...
1. The raw scores on the standardized reading test are normally distributed so the raw scores can be converted into a distribution of Z scores. If we want to mark the lower 5% of the distribution on the Z distribution, what is the Z value that is the cut-off point for that 5% tail region? (Answer with the exact Z value found from the Z table) 2. What would be the cut-off raw score if we want to mark the...
question 4 1. A distribution has a standard deviation of a = 12 points. Find the...
question 4
1. A distribution has a standard deviation of a = 12 points. Find the 2-score for each of the following locations in a distribution by sketching a distribution (do not use an equation). (4 points) a. Above the mean by 4 points b. Below the mean by 6 points c. Below the mean by 18 points 2. A distribution has a standard deviation of a = 5 and u = 30. Find the score for each of the...
A normal distribution of scores has a mean of 240 and a standard deviation of 40....
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A distribution has a standard deviation of o= 12. Find the Z-score for each of the...
A distribution has a standard deviation of o= 12. Find the Z-score for each of the following locations in the distribution. a. Above the mean by 3 points. b. Above the mean by 12 points. c. Below the mean by 24 points. d. Below the mean by 8 points. For a population with u = 50 and o= 8, find the z-score for each of the following X values. a. X= 54 b. X= 62 c. X= 52 d. X=...
calculate the raw score equivalents of the following z scores given a mean of 10 and...
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A population has mean u = 26 and standard deviation o = 5. Round the answers...
A population has mean u = 26 and standard deviation o = 5. Round the answers to two decimal places as needed. Part 1 of 3 (a) Find the Z-score for a population value of 7. The Z-score for a population value of 7 is Correct Answer: The Z-score for a population value of 7 is -3.8. (c) What number has a z-score of -0.9? has a z-score of -0.9.
A population of scores has u = 80. In this population, a score of X -86 corresponds to z = +2.00. What is the population standard deviation? Select one: a. 12
3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the z-scores corresponding to each of the following values: a. A score that is 3 points above the mean. b. A score that is 1.5 points below the mean. c. A score that is 2.25 points above the mean 4. Scores on BMCC fall 2017 MATI50.5 department final exam form a normal distribution with a mean of 70 and a standard deviation of 8. What...
question 4
1. A distribution has a standard deviation of a = 12 points. Find the 2-score for each of the following locations in a distribution by sketching a distribution (do not use an equation). (4 points) a. Above the mean by 4 points b. Below the mean by 6 points c. Below the mean by 18 points 2. A distribution has a standard deviation of a = 5 and u = 30. Find the score for each of the...
A distribution has a standard deviation of o= 12. Find the Z-score for each of the following locations in the distribution. a. Above the mean by 3 points. b. Above the mean by 12 points. c. Below the mean by 24 points. d. Below the mean by 8 points. For a population with u = 50 and o= 8, find the z-score for each of the following X values. a. X= 54 b. X= 62 c. X= 52 d. X=...
A population has mean u = 26 and standard deviation o = 5. Round the answers to two decimal places as needed. Part 1 of 3 (a) Find the Z-score for a population value of 7. The Z-score for a population value of 7 is Correct Answer: The Z-score for a population value of 7 is -3.8. (c) What number has a z-score of -0.9? has a z-score of -0.9.
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