Solve the Problem $\begin{array} { c c c c c c c } 1.3 & 7.2 & 4.2 & 12.5 & 6.6 & 2.5 & 5.5 \end{array}$

question 96

Multiple Choice

Solve the problem.
-A simple random sample of students is selected, and the students are asked how much time they spent preparing for a test. The times (in hours) are as follows: $\begin{array} { c c c c c c c } 1.3 & 7.2 & 4.2 & 12.5 & 6.6 & 2.5 & 5.5 \end{array}$
Based on these results, a confidence interval for the population mean is found to be $\mu = 5.7 \pm 4.4$ . Find the degree confidence.

• A)90%
• B)95%
• C)98%
• D)99%

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Definitions:

Test Scores

Numerical values assigned to represent an individual's performance on a test or examination, often used for assessment or comparison.

Complete Survey

A thorough examination or appraisal of the condition or status of something, particularly in research or data collection contexts.

Statistical Values

Numerical figures that represent, summarize, or interpret data collected from a study or experiment.

Population

The entire group of individuals or instances about whom we wish to draw conclusions in a statistical study.