(a) How many observations are there in group 1? Circle the number and write (a) next to it. (b) What is the mean score for group 2? Circle the number and write (b) next to it. (c) What is a point estimate for ? Circle the number and write (c) next to it. 01 (d) If 0₁ = = 02, what is a point estimate for this common standard deviation? Circle the number and write (d) next to it.
(a) How many observations are there in group 1? Circle the number and write (a) next to it. (b) What is the mean score for group 2? Circle the number and write (b) next to it. (c) What is a point estimate for ? Circle the number and write (c) next to it. 01 (d) If 0₁ = = 02, what is a point estimate for this common standard deviation? Circle the number and write (d) next to it.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
the first 4 questions
Transcribed Image Text:The following is a SAS output. Answer the questions based on this output.
Two sample t-test
The TTEST Procedure
Variable: Score
Group
1
2
Diff (1-2)
Diff (1-2)
Group
1
2
Diff (1-2)
Diff (1-2)
Method
Pooled
Satterthwaite
Method
Pooled
Satterthwaite
Mean
N
125 1.8000
150
Method
Folded F
Method
Pooled
Satterthwaite
Std Dev Std Err Minimum Maximum
0.7000 0.0626
-0.0619
0.9000 0.0735 -0.7605
0.0987
0.0965
1.6000
0.2000 0.8153
0.2000
Mean 95% CL Mean
Std Dev 95% CL Std Dev
1.8000 1.6761 1.9239
0.7000 0.6227 0.7994
1.6000
1.4548 1.7452 0.9000 0.8084 1.0152
0.2000 0.00562 0.3944 0.8153 0.7522 0.8899
0.2000 0.00994 0.3901
Variances
Equal
Unequal
DF t Value Pr> t
273
2.03 0.0438
271.76
2.07 0.0392
Equality of Variances
Num DF Den DF F Value
149 124
1.65
3.4180
3.8884
Pr> F
0.0040
(a) How many observations are there in group 1? Circle the number and write (a) next to
it.
(b) What is the mean score for group 2? Circle the number and write (b) next to it.
01
(c) What is a point estimate for ? Circle the number and write (c) next to it.
√n1
(d) If σ₁ = 02, what is a point estimate for this common standard deviation? Circle the
number and write (d) next to it.
(e) Provide an evidence that concludes o2 o2 at the 5% level. Circle the number and
write (e) next to it.
(f) What is a 95% confidence interval for 1 - 2? Circle the numbers and write (f) next
to it.
(g) What is the P-value of the hypothesis test Ho: M₁ = μ₂ VS H₁ μ₁₂? Circle the
number and write (g) next to it.
(h) Compute the P-value of the hypothesis test Ho: ₁ = 2 VS Ha μ₁ > μ₂.
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