One Method of Human Locomotion That Appears to Have No

question 13

Essay

One method of human locomotion that appears to have no function except to expressjoy is skipping, a skill usually learned in early and middle childhood. Each person ina random sample of female students and a random sample of male students at a largemiddle school was asked, "Approximately how long ago did you last spontaneouslyskip?
" The total sample sizes and the numbers who responded "Less than 1 weekago" are given in the table below: a) Construct a 95% confidence interval for the difference in the proportions of malesand the proportion of females at this school who would respond "Less than 1week."b) Referring to your work in part (a), does there appear to be evidence of a differencein the population proportions of males and females at this school who wouldrespond "Less than 1 week?
" Provide appropriate statistical justification for youranswer.

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Definitions:

Alameda County Study

A landmark research project examining how social and lifestyle factors influence health and mortality over time.

Social Support

The perception and actuality that one is cared for, has assistance available from other people, and is part of a supportive social network.

Social Isolation

The absence of specific role relationships.

External Locus

An individual's belief that their life events are largely controlled by external forces or fate rather than their own efforts.