Consider the Following Hypotheses Test $\mu$ $\ge$ 80
H_a $\mu$ < 80
a Sample of 121 Provided a Sample Mean

question 15

Essay

Consider the following hypotheses test.
H_o: $\mu$$\ge$ 80
H_a: $\mu$ < 80
A sample of 121 provided a sample mean of 77.3. The population standard deviation is known to be 16.5.
a.Compute the value of the test statistic.
b.Determine the p-value; and at 93.7% confidence, test the above hypotheses.
c.Using the critical value approach at 93.7% confidence, test the hypotheses.

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Definitions:

Aortic Valve

A valve in the heart between the left ventricle and the aorta that prevents blood from flowing back into the heart.

Conducting System

A network of specialized cardiac muscle cells responsible for initiating and distributing the electrical impulses that stimulate heart contraction.

AV Valve

The atrioventricular (AV) valve regulates blood flow from the atria to the ventricles in the heart.

Bundle of His

A collection of heart muscle cells specialized for electrical conduction that transmits the electrical impulses from the AV node to the point of the apex of the fascicular branches.