Suppose You Know That the Mean Score (M)on a Measure

question 63

Essay

Suppose you know that the mean score (m)on a measure of the personality trait "Openness to Experience" is 35.66 in a population of artists,with a standard deviation (s)of 13.32.Next,assume you went to Greenwich Village and gave this personality measure to a group of 10 artists.The mean in this sample was 40.33.You are interested in testing whether the 10 Greenwich Village artists were sampled from the same population described above.Calculate the 95% confidence interval.[Use a nondirectional test and an alpha level (a)of .05]

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Definitions:

Location Of Population

Describes where the members of a specific population are, typically in terms of geography or within a given space.

Nonparametric Procedures

Statistical methods that do not assume a specific distribution shape for the data, often used when the data doesn't meet the assumptions of parametric tests.

Distribution-Free

Refers to statistical methods or tests that do not assume a specific distribution for the underlying population data.

Wilcoxon Rank Sum

A nonparametric statistical hypothesis test used to compare two independent samples to determine if they come from the same distribution.