Solve the Problem

question 32

Multiple Choice

Solve the problem. Round your answer to one decimal place, if necessary.
-The distribution of sample means for a group of test scores for samples of 100 scores is normal with a mean of 63.9 and a standard deviation of 1.8. Suppose you take a sample of 100 test scores and find that the mean is 65.5.
How many standard deviations is the sample mean from the mean of the distribution of sample means?

• A)1.6 standard deviation(s)above the mean
• B)0.8 standard deviation(s)above the mean
• C)0.9 standard deviation(s)above the mean
• D)8.9 standard deviation(s)above the mean

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Definitions:

Symptoms

Signs or manifestations of an illness or condition, often used to diagnose and treat diseases.

Autism

A developmental disorder characterized by difficulties in social interaction and communication, along with restricted and repetitive patterns of behavior or interests.

Dimensional Approach

A method of understanding psychiatric disorders along a continuum rather than as categorical, distinct types.

Asperger's Syndrome

A developmental disorder characterized by difficulties in social interaction and nonverbal communication, along with restricted and repetitive patterns of behavior and interests.