a)
y^= 520.4 - 5.82 * 22
= 392.36
b)
change in average test score = -5.82 ( 23 - 19)
= -23.28
it will reduce by 23.28 points
c)
y^= 520.4 - 5.82 * 21.4
= 395.852
d)
df =n-2 = 98
t = 1.9845
(-5.82 - 1.9845 * 2.21 , -5.82 + 1.9845 * 2.21 )
= ( -10.2057 , -1.4343 )
e)
since 0 is not present in 95% confidence interval
we reject the null at 5 % level
I have solved first 4 parts by HomeworkLib policy
Post e) to g) parts again
Suppose that a researcher, using data on class size (CS) and average test scores from 100...
PLEASE JUST PARTS F) AND G) Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression: 1. Test-Score = 520.4-5.82 × CS (20.4) (2.21) A classroom has 22 students. What is the regression's prediction for that classroom's average test score? Last year a classroom had 19 students, and this year it has 23 students. What is the regression's prediction for the change in average test score? The sample...
5.1.) Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimate the simple linear regression: Test Score = 520.4-5.82 x CS, n= 100, R2 = 0.08. (20.4) (2.21) (a) A classroom has 22 students. What is the model's prediction for that classroom's average test score? (b) Last year a classroom had 19 students, and this year it has 23 students. What is the model's prediction for the change in the classroom...
(h) Construct a 99% confidence interval for β0. 5.1.) Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimate the simple linear regression: Test Score = 520.4-5.82 x CS, n= 100, R2 = 0.08. (20.4) (2.21) (a) A classroom has 22 students. What is the model's prediction for that classroom's average test score? (b) Last year a classroom had 19 students, and this year it has 23 students. What is the...
1. Suppose that a researcher, using data on class size (CS) and average test scores from 100 third-grade classes, estimates the OLS regression, T esdtScore = 520:4 5:82 CS A classroom has 22 students. Whatís the regressionís prediction for that classroomís average test score? Last year a classroom had 19 students, and this year it has 23 students. What is the regressionís prediction for the change in the classroom average test score? The sample average class size across the 100...
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