In a normal distribution, what does it mean that “the score of 75 was 2 standard deviations away from the mean?
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
In a normal distribution, what does it mean that “the score of 75 was 2 standard...
In a normal distribution, the mean corresponds to: Standard Score: z = Percentile: Which of the following statements are TRUE about the normal distribution? Check all that apply. A data value with z-score = -1.5 is located 1.5 standard deviations below the mean. The mean corresponds to the z-score of 1. The Empirical Rule only applies when a value is exactly 1, 2, or 3 standard deviations away from the mean. A z-score is the number of standard deviations a...
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
13. If we have a normal distribution with a mean of 75 and a standard deviation of 3. a. what z-score(s) would cut off the middle 40% of the distribution? b. what raw score(s) would cut off the lower 12% of the distribution? c, what raw score(s) would cut off the most extreme 5% of the distribution? d, what T-score(s) would cut off the upper 20% of the distribution? 13. If we have a normal distribution with a mean of...
Suppose that student’s z score is 3.00 what does this mean? discuss in terms of units of standard deviation It means the value defined by z-score is 3 standard deviations away from the mean value. Discuss in terms of its percentile score. In terms of percentile score, its mean amount of data lies below the value. Z=3 represent the 99.87 the percentile. 4. How does this student’s z score differ from another student whose z score is -3.00 5. If...
What is the approximate probability that in a normal distribution an observation is a) more than 2 standard deviations greater than the mean, b) more than 1 standard deviation below the mean, c) greater than 3 standard deviations away from the mean, d) and within 2 standard deviations of the mean?
assume that the mean of a distribution of test score is 400, with a standard deviation of 45. What would be the value of the score that falls two standard deviations above the mean?
assume that the mean of a distribution of test score is 400, with a standard deviation of 45. What would be the value of the score that falls two standard deviations above the mean?
The average ACT score follows a normal distribution with a mean of 21.1 and a standard deviation of 5.1 what is the probability that the mean IQ score of 50 randomly selected people will be more than 23 ?
The difference between a standard score of -1.0 and a standard score of 1.0 is a) the standard score 1.0 is farther from the mean than -1.0 b) the standard score -1.0 is farther from the mean than 1.0 c) the standard score 1.0 is above the mean while -1.0 is below the mean. d) the standard score -1.0 is above the mean while 1.0 is below the mean. 16 17 If the test scores on an art history exam...
A distribution of values is normal with a mean of 87.6 and a standard deviation of 39.3. Find P25, which is the score separating the bottom 25% from the top 75%. P25 = Enter your answer as a number accurate to 4 decimal places.