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% confidence interval for the average reading speed of a secretary whose typing speed is 71.
Dependent variable is: Reading speed
R-squared = 12.385%
S = 100.3348 with 9 - 2 = 7 degrees of freedom
A)330.4 to 747.3 words per minute
B)444.1 to 633.6 words per minute
C)532.2 to 545.5 words per minute
D)405.9 to 450.9 words per minute
E)326.4 to 751.3 words per minute

Question

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% confidence interval for the average reading speed of a secretary whose typing speed is 71. 
Dependent variable is: Reading speed
R-squared = 12.385%
S = 100.3348 with 9 - 2 = 7 degrees of freedom 
A)330.4 to 747.3 words per minute 
B)444.1 to 633.6 words per minute 
C)532.2 to 545.5 words per minute 
D)405.9 to 450.9 words per minute 
E)326.4 to 751.3 words per minute

Quizplus · Accepted Answer

The Answer of 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% confidence interval for the average reading speed of a secretary whose typing speed is 71. 
Dependent variable is: Reading speed
R-squared = 12.385%
S = 100.3348 with 9 - 2 = 7 degrees of freedom 
A)330.4 to 747.3 words per minute 
B)444.1 to 633.6 words per minute 
C)532.2 to 545.5 words per minute 
D)405.9 to 450.9 words per minute 
E)326.4 to 751.3 words per minute

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