Homework Answers
The z score is the fractional number of standard deviations by which the value of data point is above the mean value of what is being measured.
Here z score is of value 2, which means it is two standard deviations above the mean
Hence answer here is 
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In a distribution of scores, a score value (X) has a z-score of 2. How would...
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=...
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.
1. What position in the distribution corresponds to a z-score of z = .50? A. Below...
1. What position in the distribution corresponds to a z-score of z = .50? A. Below the mean by a distance equal to 0.5 standard deviations. B. Below the mean by 0.5 points. C. Above the mean by 0.5 points. D. Above the mean by a distance equal to 0.5 standard deviations. 2. Which of the following z-score values represents the location closest to the mean? A. z=+1.50 B. z=+1.00 C. z=-0.75 D. z=-2.00 3. For a population with ยต...
Question 9 Background : Model for IQ Scores The distribution of IQ scores (for a particular...
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Give all answers to 4 decimal places. For a standard normal distribution: a) find the probability...
Give all answers to 4 decimal places. For a standard normal distribution: a) find the probability a score is between the mean and 0.85 standard deviations above the mean? b) find the probability a score is between the mean and 0.85 standard deviations below the mean? c) If the probability that a person scores below a particular value is 0.17, then the probability a person scores above that value equals? d) If the probability that a person scores between...
WHICHI OT the following statements is not true concerning the attributes of z-scores? A) z-scores are...
WHICHI OT the following statements is not true concerning the attributes of z-scores? A) z-scores are positive for data values above the mean of the distribution. B) 2-scores are negative for data values below the mean of the distribution. C) 2-scores indicate how many standard deviations an observation is away from the me D) z-scores are equal to zero for data values equal to the mean of the distribution. E) none of the above
7. z-scores and standardized scores Is a standardized score necessarily a z-score? Yes No Consider the...
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7. z-scores and standardized scores Is a z-score a standardized score? No Yes Consider the following...
7. z-scores and standardized scores Is a z-score a standardized score? No Yes Consider the following distribution of scores with a mean of 50 and a standard deviation of 10. For the letters A, B, C, and D in the boxes beneath the ine labeled "z" give the z-scores corresponding to each position in the distribution. One z-score is already filled in (-1) Suppose you also want to standardize these scores to a "k" scale where the mean of k...
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...
A z score of 1.25 represents an observation that is a) 1.25 standard deviation below the...
A z score of 1.25 represents an observation that is a) 1.25 standard deviation below the mean. b) 0.25 standard deviations above the mean of 1. c) 1.25 standard deviations above the mean. d) both b and c Assume that your class took an exam last week and the mean and standard deviation of the exam were 85 and 5, respectively. Your instructor told you that 30 percent of the students had a score of 90 or above. You would...
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=...
WHICHI OT the following statements is not true concerning the attributes of z-scores? A) z-scores are positive for data values above the mean of the distribution. B) 2-scores are negative for data values below the mean of the distribution. C) 2-scores indicate how many standard deviations an observation is away from the me D) z-scores are equal to zero for data values equal to the mean of the distribution. E) none of the above
7. z-scores and standardized scores Is a standardized score necessarily a z-score? Yes No Consider the following distribution of scores with a mean of 90 and a standard deviation of 30. For the letters A, B, C, and D in the boxes beneath the line labeled "z" give the z-scores corresponding to each position in the distribution. One z-score is already filled in (-1) Suppose you also want to standardize these scores to a "k" scale where the mean of...
7. z-scores and standardized scores Is a z-score a standardized score? No Yes Consider the following distribution of scores with a mean of 50 and a standard deviation of 10. For the letters A, B, C, and D in the boxes beneath the ine labeled "z" give the z-scores corresponding to each position in the distribution. One z-score is already filled in (-1) Suppose you also want to standardize these scores to a "k" scale where the mean of k...
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...
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