# Question

A sample of n = 9 scores has a mean of M = 13.

After one score is added to the sample, the mean is found to be M = 12. What is the value of the score that was added?

After one score is added to the sample, the mean is found to be M = 12. What is the value of the score that was added?

## Answer to relevant Questions

A sample of n = 9 scores has a mean of M = 20. One of the scores is changed and the new mean is found to be M = 22. If the changed score was originally X = 7, what is its new value? Schmidt (1994) conducted a series of experiments examining the effects of humor on memory. In one study, participants were shown a list of sentences, of which half were humorous and half were nonhumorous. A humorous example ...A population has a mean of m = 30 and a standard deviation of s = 5. a. If = points were added to every score in the population, what would be the new values for the mean and standard deviation? b. If every score in the ...Calculate SS, variance, and standard deviation for the following sample of n = 5 scores: 10, 4, 8, 5, 8. (Note: The definitional formula for SS works well with these scores.) Calculate SS, variance, and standard deviation ...Find the z-score corresponding to a score of X = 45 for each of the following distributions. a. μ = 40 and σ = 20 b. μ = 40 and σ = 10 c. μ = 40 and σ = 5 d. μ = 40 and σ = 2Post your question

0