A normal distribution of scores has a mean of 240 and a standard deviation of 40....
A normal distribution of scores has a mean of 240 and a standard deviation of 40.
1. What score separates the top 40% of the scores from the rest?
2. What score corresponds to the 90th percentile?
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A normal distribution of scores has a mean of 240 and a standard
deviation of 40....
A normal distribution has a mean of 80 with a standard deviation of 20. What score...
A normal distribution has a mean of 80 with a standard deviation of 20. What score separates the highest 40% of the distribution from the rest of the scores? A) X= 54.4 B) X= 85 C) X= 75 D) X= 105.6
6. A normal distribution of has a mean of 20 and a standard deviation of 10....
6. A normal distribution of has a mean of 20 and a standard deviation of 10. Find the z-scores corresponding to each of the following values: (10 points) a) What is the z score for a value of 30? b) What is the z score for a value of 10? c) What is the z score for a value of 15? d) What it P(20<x<30)? e) What is P (x > 10)? ) What is P (x < 15)? g)...
Given a distribution of scores with a mean of 40 and a standard deviation of 6,...
Given a distribution of scores with a mean of 40 and a standard deviation of 6, convert the following scores to the standard scores indicated: a) X = 42 to a GRE score (a standard score with a mean of 500 and a standard deviation of 100) b) X = 29 to an IQ score (a standard score with a mean of 100 and a standard deviation of 15)
- What proportion of a normal distribution is located between each of the following Z-score boundaries?...
What proportion of a normal distribution is located between each of the following Z-score boundaries? a. z= -0.50 and z= +0.50 b. z=-0.90 and z= +0.90 c. z=-1.50 and z= 1.50 For a normal distribution with a mean of μ = 80 and a standard deviation of σ= 20, find the proportion of the population corresponding to each of the following. a. Scores greater than 85. b. Scores less than 100. c. Scores between 70 and 90. IQ test scores are standardized to produce a normal distribution with...
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...
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...
1. A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to...
1. A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: a. A score that is 20 points above the mean. b. A score that is 10 points below the mean. c. A score that is 15 points above the mean. d. A score that is 30 points below the mean.
Use the normal distribution of IQ scores, which has a mean of 85 and a standard...
Use the normal distribution of IQ scores, which has a mean of 85 and a standard deviation of 18, and the following table with the standard scores and percentiles for a normal distribution to find the indicated quantity. The percentage of scores between 40 and 130 is ______%. Full data set Standard score % Standard score % minus−3.0 0.13 0.1 53.98 minus−2.5 0.62 0.5 69.15 minus−2 2.28 0.9 81.59 minus−1.5 6.68 1 84.13 minus−1 15.87 1.5 93.32 minus−0.9 18.41 2...
11. Scores on a national exam are normally distributed with mean 382 and standard deviation 26....
11. Scores on a national exam are normally distributed with mean 382 and standard deviation 26. Find the score that is the 50th percentile. b. Find the score that is the 90th percentile. a.
1.A distribution of values is normal with a mean of 6.3 and a standard deviation of...
1.A distribution of values is normal with a mean of 6.3 and a standard deviation of 83.3. Find P57, which is the score separating the bottom 57% from the top 43%. P57 = 2.A distribution of values is normal with a mean of 180.3 and a standard deviation of 20.5. Find P71, which is the score separating the bottom 71% from the top 29%. P71 =
6. A normal distribution of has a mean of 20 and a standard deviation of 10. Find the z-scores corresponding to each of the following values: (10 points) a) What is the z score for a value of 30? b) What is the z score for a value of 10? c) What is the z score for a value of 15? d) What it P(20<x<30)? e) What is P (x > 10)? ) What is P (x < 15)? g)...
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...
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...
11. Scores on a national exam are normally distributed with mean 382 and standard deviation 26. Find the score that is the 50th percentile. b. Find the score that is the 90th percentile. a.
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