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A Local Airport Keeps Track of the Percentage of Flights 7697711478790780888128218388\begin{array} { l l } 76 & 9 \\77 & 114 \\78 & \\79 & 07 \\80 & 88 \\81 & 2 \\82 & 1 \\83 & 88\end{array}

question 175

Multiple Choice

A local airport keeps track of the percentage of flights arriving within 15 minutes of their scheduled arrivals. The stem-and-leaf plot of the data for one year is below. The leaf unit is 0.1.
7697711478790780888128218388\begin{array} { l l } 76 & 9 \\77 & 114 \\78 & \\79 & 07 \\80 & 88 \\81 & 2 \\82 & 1 \\83 & 88\end{array}
-What is the sample size?

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Definitions:

Interval Estimate

An estimate of a population parameter that is given as a range of values, offering a level of confidence in the estimate's accuracy.

Hypotheses Testing

A method of statistical inference that is used to decide whether the data at hand sufficiently support a particular hypothesis.

Senatorial Election

A political process through which individuals are elected to represent a state or equivalent entity in the senate.

Expected Value

The average of all possible outcomes of a random variable, weighted by their respective probabilities.

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