Question
Applicants for a particular job, which involves extensive travel in Spanish-speaking countries, must take a proficiency...
Applicants for a particular job, which involves extensive travel in Spanish-speaking countries, must take a proficiency test in Spanish. The sample data were obtained in a study of the relationship between the numbers of years (x) applicants have studied Spanish and their score (y) on the test. Use the analysis to find a 99% confidence interval for the true slope.
The regression equation is
ModifyingAbove y with caretyequals=31.53333plus+10.90476x,
with
R-sqequals=83.0%,
and
10minus−2equals=8
degrees of freedom.
|
Predictor |
Coef |
SE(Coef) |
T |
P |
|---|---|---|---|---|
|
Constant |
31.53333 |
6.360418 |
4.957745 |
0.00111 |
|
Number of years |
10.90476 |
1.744054 |
6.252538 |
0.000245 |
Homework Answers
Answer #1
TOPIC:Confidence interval for the slope of a regression equation.
(The answer has been rounded to two decimal places).(ANSWER)
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