A Student Wanted to Know Whether Memory for Items on a Grocery

question 47

Multiple Choice

A student wanted to know whether memory for items on a grocery list was better when a bizarre image was created for each item,compared with a strategy of simply trying to remember the items.The student had a randomly selected sample use bizarre imagery to remember a list of 15 items;the mean number of items remembered was 10.The student compared this mean to a population mean of 7 and a standard error of 1.20.What is the probability of obtaining a sample mean of 10 or higher?

• A)0.0062
• B)0.1151
• C)0.4938
• D)0.9938

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Definitions:

Mean Square

A statistic that represents the average of the squares of a set of values, often used in variance and regression analysis.

F Statistic

A ratio of variances that is used in the analysis of variance (ANOVA) to assess the significance of group differences.

Population Variances

A measure of the spread of a population's values.

Sample Sizes

The number of observations or elements chosen from a population to be included in a sample, affecting the accuracy and reliability of statistical analysis.