Solve the Problem

question 125

Multiple Choice

Solve the problem. Round the point estimate to the nearest thousandth.
-364 randomly selected light bulbs were tested in a laboratory, 124 lasted more than 500 hours. Find a point estimate of the proportion of all light bulbs that last more than 500 hours.

• A) 0.254
• B) 0.659
• C) 0.338
• D) 0.341

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Definitions:

Chi-Square Test

A nonparametric test used to determine if there is a significant association between two categorical variables.

Sampling Distribution

The probability distribution of a given random-sample-based statistic if you repeatedly sample from the same population.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution, influencing the shape and range of possible outcomes.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or to a sample estimate of a parameter.