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

question 45

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 provided below to find a 90% confidence interval for the slope of the regression line. 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)(-3.05,10.05)
• B)(-1.48,8.48)
• C)(-1.42,8.42)
• D)(-3.17,10.17)
• E)(-4.82,11.83)

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