One Method of Human Locomotion That Appears to Have No

question 1

Essay

One method of human locomotion that appears to have no function except to express
joy is skipping, a skill usually learned in early and middle childhood. Each person in
a random sample of female students and a random sample of male students at a large
middle school was asked, "Approximately how long ago did you last spontaneously
skip?" The total sample sizes and the numbers who responded "Less than 1 week
ago" are given in the table below: $$\begin{array} { | l | c | c | } \hline { \text { Number responding "Less than } 1 \text { week" } } \\ { \text { Gender } } & \boldsymbol { x } & \boldsymbol { n } \\\hline \text { Males } & 71 & 411 \\\text { Females } & 64 & 253 \\\hline\end{array}$$ a) Construct a $95 \%$ confidence interval for the difference in the proportions of males and the proportion of females at this school who would respond "Less than 1 week." b) Referring to your work in part (a), does there appear to be evidence of a difference
in the population proportions of males and females at this school who would
respond "Less than 1 week?" Provide appropriate statistical justification for your
answer.

Comprehend the role of hypotheses in psychological research.

Acknowledge the importance of replication in scientific research.

Describe the process of scientific investigation in psychology.

Understand the significance of complete and ethical reporting in psychological research.

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Definitions:

Direct Method

A way of presenting a cash flow statement where actual cash flow information from operating activities is disclosed.

Common Stock

A type of equity security that represents ownership in a corporation, providing voting rights, and entitling holders to a share of the company's success through dividends and/or capital appreciation.

Net Increase

The total growth in value or quantity after accounting for all additions and subtractions.

Stock Dividend

A payment to shareholders made in the form of additional shares rather than cash, often used by companies to conserve cash while still providing a dividend.