The Table Below Shows the Gender and the Percentage of Each

question 7

Multiple Choice

The table below shows the gender and the percentage of each gender that spent different amounts at a local hardware store. The data was taken from a random sample of single shoppers collected over five consecutive Saturdays at the hardware store. Choose the reason(s) why you cannot do a Chi-square test with this data. $$\begin{array} { | l | c | c | c | } \hline & \$ 0 - \$ 20 & > \$ 20 - \$ 50 & > \$ 50 \\\hline \text { Male shopper } & 27 \% & 42 \% & 31 \% \\\hline \text { Female shopper } & 46 \% & 35 \% & 19 \% \\\hline\end{array}$$

• A) The data are from the entire population, not a sample, so inference is unnecessary.
• B) There is not enough information to convert the percentages to counts.
• C) The samples were not collected randomly.
• D) All of these.

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Definitions:

AV Valves

The atrioventricular valves, consisting of the tricuspid and mitral valves, regulate blood flow from the atria to the ventricles in the heart.

Left Ventricle

The chamber of the heart that receives oxygen-rich blood from the left atrium and pumps it out to the body through the aorta.

Ventricular Systole

Ventricular systole is the phase of the cardiac cycle during which the ventricles contract, pumping blood out of the heart and into the circulatory system.

Semilunar Valves

Heart valves located between the ventricles and the major arteries leaving the heart, which prevent the backflow of blood.