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:

Myofibril

Specific muscle cell organelle containing a linear arrangement of sarcomeres, which shorten to produce muscle contraction.

Sarcomeres

The basic contractile unit of muscle fiber, consisting of actin and myosin filaments between two Z-lines.

Myofilaments

Protein filaments consisting of actin and myosin that are the primary components of muscle contraction.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays key roles in arousal, attention, memory, and muscle activation.