# Math

posted by .

A sample of n _ 11 scores has a mean of M _ 4. One person with a score of X _ 16 is added to the sample.
What is the value for the new sample mean?

• Math -

The sum of 11 scores was 4x11 = 44
The sum of 12 scores becomes 44 +16 = 60
The new mean (of 12 scores) is 60/12 = 5

## Similar Questions

1. ### statistics

-A set of seven scores has a mean of 10. If one of the scores is changed from X=15 to X=1, what will be the new value for the new mean?
2. ### statistics

A sample of n = 20 scores has a mean of M = 6. If one new person with a score of X = 27 is added to the sample, what will be the value for the new mean?
3. ### statistics

A sample of n = 9 scores has a mean of M _ 10. One person with a score of X _ 2 is removed from the sample. What is the value for the new sample mean?
4. ### probability and statistics

a population forms a normal distribution with a mean of u=80 and a standard deviation of o=15. for each of the following samples, compute the z-score for the sample mean and determine whether the sample mean is a typical, representative …
5. ### Math Statistics

A sample has a mean of M = 25. If one person with a score of X = 25 is added to the sample, what effect will it have on the sample mean?
6. ### Math Statistics

A sample has a mean of M = 25. If one person with a score of X = 25 is added to the sample, what effect will it have on the sample mean?
7. ### statistic

In a population of exam scores, a score of X  48 corresponds to z1.00 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 …
8. ### 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 z-score for each score in the sample. c. Transform the original sample into a new sample …
9. ### Math

I need help with this these two problem PLEASE!!! For a population with a mean of μ  80 and a standard deviation of   12, find the z-score corresponding to each of the following samples. a. M  83 for a sample of n  4 scores …
10. ### statistics

A sample of n = 7 scores has a mean of M = 5. After one new score is added to the sample, the new mean is found to be M = 6. What is the value of the new score?

More Similar Questions