What Is for a 95% Confidence Interval of the Population

question 90

Multiple Choice

What is for a 95% confidence interval of the population mean based on a sample of 15 observations?

• A)1.761
• B)1.960
• C)2.131
• D)2.145

---

Definitions:

Confidence Interval

A range of values, derived from the statistics of the observed data, that is likely to contain the value of an unknown population parameter.

Null Hypothesis

The hypothesis in statistical testing that assumes no significant difference or effect in the population; it is the hypothesis that researchers aim to test against.

One-sample T Test

A statistical test used to determine whether the mean of a single sample differs significantly from a known or hypothesized population mean.

Standard Error

A statistical measure that estimates the accuracy of a sample mean by quantifying the dispersion of sample means around the population mean.