The Typing Speeds (In Words Per Minute)and Reading Speeds (In

question 34

Multiple Choice

The typing speeds (in words per minute) and reading speeds (in words per minute) of nine randomly selected secretaries were recorded.Use the regression analysis and summary statistics provided below to determine a 90% prediction interval for the reading speed of a secretary whose typing speed is 50. $$\begin{array} { l c l l c } \text { Variable } & \text { Count } & \text { Mean } & \text { StdDev } & \text { Range } \\\text { Typing speed } & 9 & 60.44444 & 3.3587 & 35 \\\text { Reading speed } & 9 & 501.8889 & 33.42298 & 297\end{array}$$ Dependent variable is: Reading speed R-squared = 12.385%
S = 100.3348 with 9 - 2 = 7 degrees of freedom $$\begin{array} { l l l l l } \text { Variable } & \text { Coefficient } & \text { SE(Coeff) } & \text { t-ratio } & \text { P-value } \\\text { Constant } & 290.2093 & 215.4116 & 1.347231 & 0.219884 \\\text { Typing speed } & 3.502052 & 3.520579 & 0.994737 & 0.352998\end{array}$$

• A)371.1 to 559.5 words per minute
• B)253.1 to 677.5 words per minute
• C)405.9 to 450.9 words per minute
• D)257.1 to 673.6 words per minute
• E)458.6 to 472.0 words per minute

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Definitions:

Nonsense Syllables

A set of letters that do not form known words, used in psychological experiments to study memory and learning processes.

Foreign Language

A language that is not the native language of the speaker, but that is used in the area where they are living or while visiting another country.

Alphabetic Order

A method of arranging items based on the sequence of letters in the alphabet from A to Z.

Social Loafing

A scenario in which individuals working in a group setting display reduced effort in achieving objectives, unlike when working independently.