Unit F Two Hypothesis Test...Unit F-Two-sample Hypothesis TestF. I-confidence Interval for...
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Unit F - Two sample Hypothesis Test F. I - confidence Interval for Difference Between Two - sample Means n , = 100 I , = 450 S , = 20 Nz = 150 ① ② I , = 410 Sz = 45 Step : check the assumptions n , = 100 330 Nz = 1507 , 30 } ⇒ Z - CI is ok 6 , = 62 T ← pop . Std of total pop . standard den . points for traditional of the total points students for students in SWYS group step : 959. CI ⇒ 2=0.05 - ( I - E) ± ✓s÷ts÷ - - 450-4101 I 1.96/2%+7%2 I ¥ 40 I 8.2 = ( 31.8 , 48 . 2) £0.025 = l . 96 The 958 CI for the difference in the average total points for these 2 methods is ( 31.8 . 48.2 ) .
Transcript of Unit F Two Hypothesis Test...Unit F-Two-sample Hypothesis TestF. I-confidence Interval for...
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Unit F - Two - sample Hypothesis TestF. I - confidence Interval for Difference Between Two- sample Means
n ,= 100
I,= 450
S,= 20
Nz = 150
① ② I,= 410
Sz = 45
Step : check the assumptions
n ,= 100 330
Nz = 1507, 30 } ⇒ Z - CI is ok
6,= 62
T ←pop. Std of total
pop . standard den . points for traditionalof the total points students
for students in SWYS group
step : 959. CI ⇒ 2=0.05-
( I - E) ± ✓s÷ts÷ -
- 450-4101 I 1.96/2%+7%2I ¥ 40 I 8.2 = ( 31.8 , 48 . 2)
£0.025 = l.96
The 958 CI for the difference in the average total points forthese 2 methods is ( 31.8. 48.2) .