In a Survey of 1300 T

question 38

Multiple Choice

In a survey of 1300 T.V.viewers,30% said they watch network news programs.Find the margin of error for this survey if we want 95% confidence in our estimate of the percent of T.V.viewers who watch network news programs.

• A)2.86%
• B)1.87%
• C)2.49%
• D)3.27%

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Definitions:

Chi-squared Test

A chi-squared test is a statistical method used to assess the differences between observed and expected frequencies in one or more categories.

Expected Values

The long-term average or mean value of a random variable over numerous trials or occurrences.

Null Hypothesis

A default hypothesis that indicates no effect or no difference, and against which the alternative hypothesis is tested.

Proportions

The ratio of part to whole, expressed as a fraction or percentage, describing the relative size of parts within a population or a whole.