A Random Sample of 100 People Was Taken

question 3

Multiple Choice

A random sample of 100 people was taken. Eighty-five of the people in the sample favored Candidate A. We are interested in determining whether or not the proportion of the population in favor of Candidate A is significantly more than 80%. The p-value is

• A) .2112.
• B) .05.
• C) .025.
• D) .1056.

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Definitions:

Exponentially Distributed

Describes the time between events in a process in which events occur continuously and independently at a constant average rate.

Parameter λ

A symbol often used to denote a specific parameter in mathematical or statistical expressions, such as the rate parameter in an exponential distribution.

Variance

A measure of the dispersion or spread of a set of data points around their mean, indicating how much the data points differ from the mean.

Standard Normal Random Variable

A random variable with a mean of zero and a standard deviation of one, following the standard normal distribution, which is a specific instance of the normal distribution.