A Researcher Wants to Construct a 98% Confidence Interval for the Proportion

question 7

Multiple Choice

A researcher wants to construct a 98% confidence interval for the proportion of elementary school students in Seward County who receive free or reduced-price school lunches. A state-wide survey Indicates that the proportion is 0.60. Using this estimate, what sample size is needed so that the Confidence interval will have a margin of error of 0.07?

• A) 265
• B) 19
• C) 8
• D) 189

Comprehend the concept and process of shaping and successive approximations in behavior modification.

Understand the use of tokens and reinforcement in shaping desirable behaviors.

Grasp the physiological and psychological mechanisms underlying the effectiveness of biomedical therapies.

Distinguish between different types of biomedical therapies and their specific applications.

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Definitions:

Standard Error

The standard deviation of the sampling distribution of a statistic, most commonly of the mean; it measures how precisely the mean of the sample estimates the population mean.

Point Estimate

A single value or statistic that serves as the best guess or most likely value for a population parameter based on sample data.

Population Means

The average or mean value of a particular characteristic of all individuals in a population.

Population Means

The average values of a trait or measurement within a given population.