The Following Frequency Distribution Displays the Scores on a Math

question 3

Multiple Choice

The following frequency distribution displays the scores on a math test. Find the class boundaries of scores interval 40-59. $\begin{array}{cc}\hline \text { Scores } & \text { Number of Students } \\\hline 50-59 & 2 \\60-69 & 4 \\70-79 & 6 \\80-89 & 15 \\90-99 & 5 \\\hline\end{array}$

• A) \(49.5,59.5\)
• B) \(50.5,59.5\)
• C) \(49.5,58.5\)
• D) \(50.5,58.5\)

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Definitions:

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis in hypothesis testing.

Confidence Interval

A range of numerical values sourced from sample data, envisaged to enclose the value of an undiscovered population parameter.

Normal Distribution

A symmetrical, bell-shaped distribution of data where most of the observations cluster around the central peak and probabilities for values taper off equally in both directions from the mean.

Gas Mileage

A measure of a vehicle's fuel efficiency, typically expressed in miles per gallon (mpg) or kilometers per liter (km/L).