What Is Z_α/2 for a 90% Confidence Interval of the Population

question 95

Multiple Choice

What is z_α/2 for a 90% confidence interval of the population mean?

• A) 0.48
• B) 0.49
• C) 1.645
• D) 1.96

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Definitions:

Sample Proportion

The fraction or percentage of the sample that has a particular property or characteristic.

Population Proportion

The fraction or percentage of individuals in a population that exhibit a specific attribute or characteristic.

Sample Proportion

The ratio or fraction of sample observations that belong to a particular category or characteristic.

Standard Deviation

A parameter for evaluating the breadth of dispersion or difference in a set of figures.