A Boat Travels 39 Miles Up the River in the Same

question 21

Multiple Choice

A boat travels 39 miles up the river in the same amount of time it takes to travel 51 miles down the same river. If the current is 2 miles per hour, what is the speed of the boat in still water? d r t Upstream Downstream

• A)12 miles per hour
• B)15 miles per hour
• C)7.5 miles per hour
• D)11 miles per hour
• E)2 miles per hour

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Definitions:

P Chart

A type of control chart used for monitoring the proportion of defective items in a process over time.

Control Charts

Graphical tools used to determine if a manufacturing or business process is in a state of statistical control.

Sample Proportion

The ratio or fraction of sample observations that belong to a certain category or that exhibit a particular attribute or characteristic.

Centerline

In statistical process control, the central value around which data points fluctuate, often representing the process average.