Find the Confidence Interval Specified $\bar { x }$ , on an Aptitude Test for a Random Sample of x

question 16

Multiple Choice

Find the confidence interval specified.
-The mean score, $\bar { x }$ , on an aptitude test for a random sample of 3 students was 65 . Assuming that $\sigma = 14$ , construct a $95.44 \%$ confidence interval for the mean score, $\mu$ , of all students taking the test.

• A)\(52.9\) to \(77.1\)
• B) 37 to 93
• C) \(55.7\) to \(74.3\)
• D) \(48.8\) to \(81.2\)

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Definitions:

Anionic

Pertaining to ions or molecules that carry a negative electric charge.

Cationic Polymerization

A type of polymerization where the growth of a polymer chain proceeds via cationic species as the propagating centers.

PhOH

Phenol, a toxic and caustic compound of benzene with an attached hydroxyl group, used as an antiseptic and in chemical manufacturing.

Poly(acrylonitrile)

A synthetic polymer made from acrylonitrile monomers, commonly used for fibers in textiles and other applications.