Instruction 2-8
the Stem-And-Leaf Display Represents the Number of Times

question 21

Short Answer

Instruction 2-8
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.
$$\begin{array} { l l } \text { Stem } & \text { Leaves } \\\hline0 & 012222233333344566666667789999 \\1 & 1111222234444455669999 \\2 & 00011223455556889 \\3 & 0000446799 \\4 & 011345567 \\5 & 0077 \\6 & 8 \\7 & 67 \\8 & 3 \\9 & 0247\end{array}$$
-Referring to Instruction 2-8,________ of the 100 members visited the health club no more than 12 times in a year.

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Definitions:

Significance Level

The significance level, often denoted by alpha, is the probability of rejecting the null hypothesis when it is true, utilized in hypothesis testing as a threshold for determining statistical significance.

Type I Error

The mistake of rejecting the null hypothesis when it is actually true, often represented by the symbol α.

Rejection Region

The range of values in hypothesis testing for which the null hypothesis is rejected, based on the chosen level of significance.

Two-Sided Hypothesis

A hypothesis test that allows for an effect in two directions, either greater than or less than a specific value, not limiting the expected effect to one direction.