A Random Sample of 50 Employees of a Large Company

question 112

Essay

A random sample of 50 employees of a large company was asked the question, "Do you participate in the company's stock purchase plan?" The answers are shown below.

$$\begin{array} { l l l l l l l l l l } \text { yes } & \text { no } & \text { no } & \text { yes } & \text { no } & \text { no } & \text { yes } & \text { yes } & \text { no } & \text { no } \\\text { no } & \text { yes } & \text { yes } & \text { yes } & \text { no } & \text { yes } & \text { no } & \text { no } & \text { yes } & \text { yes } \\\text { no } & \text { yes } & \text { yes } & \text { no } & \text { yes } & \text { yes } & \text { no } & \text { yes } & \text { yes } & \text { yes } \\\text { yes } & \text { no } & \text { no } & \text { yes } & \text { yes } & \text { yes } & \text { yes } & \text { yes } & \text { no } & \text { yes } \\\text { no } & \text { yes } & \text { yes } & \text { no } & \text { yes } & \text { yes } & \text { yes } & \text { yes } & \text { yes } & \text { yes }\end{array}$$ Use a 90% confidence interval to estimate the proportion of employees who participate in the company's stock purchase plan.

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Definitions:

Breast

A complex tissue comprising mammary glands, fat, and connective tissue, functioning in milk production for offspring nourishment in mammalian females.

Hypothalamus

In vertebrates, part of the brain that helps regulate the internal environment of the body—for example, heart rate, body temperature, and water balance.

Estrogen

Female sex hormone that helps maintain sexual organs and secondary sex characteristics.

Cross-Linked Proteins

Proteins whose amino acid side chains form covalent bonds with each other, stabilizing their structure and affecting their properties.