statistics
posted by Andrew .
For a sample with a mean of M=85, a score of X=90 corresponds to a zscore of z=1.00. What is the sample standard deviation?

Since (ScoreMean)= 90  85
= z*(std. deviation) = 5 ,
std. deviation = 5/z = 5/1.00 = 5
Respond to this Question
Similar Questions

statistics
For a sample with a mean of M=45, a score of x=59 corresponds to z=2.00.What is the sample standard deviation? 
statistics
For a sample with a mean of M 45, a score of 59 corresponds to z 2.00. What is the sample standard deviation? 
statistics
A student was asked to compute the mean and standard deviation for the following sample of n _ 5 scores: 81, 87, 89, 86, and 87. To simplify the arithmetic, the student first subtracted 80 points from each score to obtain a new sample … 
statistics
So if a depression scale has 30 items in it, and if an individual gets a score of 20 what does this mean? 
statistics
So if a scale has 30 items in it, and if an individual gets a score of 20 what does this mean? 
stats
2. A standardized exam was provided to all 3rd graders in Arizona schools. The average score was 75 with a standard deviation of 10. Assuming that the scores were normally distributed, answer the following questions. (a) What zscore … 
statistic
In a population of exam scores, a score of X 48 corresponds to z1.00 and a score of X 36 corresponds to z –0.50. Find the mean and standard deviation for the population. (Hint: Sketch the distribution and locate the two scores … 
stat.
A sample consists of the following n 6 scores: 2, 7, 4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample. b. Find the zscore for each score in the sample. c. Transform the original sample into a new sample … 
statistics
In a recent study on gender differences in education, a sample of 7 boys had a mean score of 18.5 and a standard deviation of 4.1 on a Standardized Math Test. A sample of 11 girls had a mean score of 19.9 and a standard deviation of … 
statistics
1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions. Instead, …