Find the Indicated Expected Frequency $$\mathrm { E } _ { 2,2 }$$

question 57

Multiple Choice

Find the indicated expected frequency.
-A researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample of 315 adults was selected and the results are shown below. Find the expected
Frequency for the cell $$\mathrm { E } _ { 2,2 }$$ to determine if there is enough evidence to conclude that the number of minutes
Spent online per day is related to gender. Round to the nearest tenth if necessary. $$\begin{array} { l | c c c c } & { \text { Minutes spent online per day } } \\\hline \text { Gender } & 0 - 30 & 30 - 60 & 60 - 90 & 90 + \\\text { Male } & 23 & 35 & 76 & 46 \\\text { Female } & 31 & 42 & 46 & 16\end{array}$$

• A)33
• B)52.3
• C)44
• D)69.7

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Definitions:

Bulimia Nervosa

Eating disorder characterized by binge eating followed by purging of food (vomiting).

Pepsin

Enzyme secreted by gastric glands that digests proteins to peptides.

Hydrochloric Acid

A strong, corrosive acid found in the gastric juices of the stomach that aids in digestion and kills microbes.

Smooth Muscle

Nonstriated, involuntary muscle found in the walls of internal organs.