ALLENGE IVITY 62.2600368.qx3zqy7 8.2.3: Hypothesis testing for two population proportions (one-talled 2-test). Jump to level 1 A university department chair believes that the afternoon section of a large survey class has a consistently lower proportion of students that pass the class compared to the morning section. The chair checks a random sample of student records from each section. The results of the data collected are shown below. Morning section Afternoon section Successes 346 Successes 426 500 400 Observations Observations p-hat_1 0.865 p-hat_2 0.852 Confidence level 95% z-score -0.5548 p-value 0.2912 -3 -2 -1 0 2 3 p= Ex: 1.234 2= Morning section samples: n₁ = Ex: 9 Afternoon section samples: n₂ = Sample proportion for morning section samples: p₁ = Ex: 1.234 Sample proportion for afternoon section samples: p₂ = HE
ALLENGE IVITY 62.2600368.qx3zqy7 8.2.3: Hypothesis testing for two population proportions (one-talled 2-test). Jump to level 1 A university department chair believes that the afternoon section of a large survey class has a consistently lower proportion of students that pass the class compared to the morning section. The chair checks a random sample of student records from each section. The results of the data collected are shown below. Morning section Afternoon section Successes 346 Successes 426 500 400 Observations Observations p-hat_1 0.865 p-hat_2 0.852 Confidence level 95% z-score -0.5548 p-value 0.2912 -3 -2 -1 0 2 3 p= Ex: 1.234 2= Morning section samples: n₁ = Ex: 9 Afternoon section samples: n₂ = Sample proportion for morning section samples: p₁ = Ex: 1.234 Sample proportion for afternoon section samples: p₂ = HE
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

Transcribed Image Text:CHALLENGE
ACTIVITY
402562.2600368.qx3zqy7
8.2.3: Hypothesis testing for two population proportions (one-tailed z-test).
Jump to level 1
A university department chair believes that the afternoon section of a large survey class has a consistently lower
proportion of students that pass the class compared to the morning section. The chair checks a random sample
of student records from each section. The results of the data collected are shown below.
Morning section
Afternoon section
Successes
Observations
p-hat_1
346 Successes
400 Observations
0.865 p-hat_2
Confidence level
95%
-0.5548
p-value
0.2912
3
2
6
2
P= Ex 1.234
Morning section samples: ₁
Ex: 9
Afternoon section samples: 1₂
Sample proportion for morning section samples: p1
Sample proportion for afternoon section samples: p₂
–
O
500
LE
E
2 №
7 || |||
Ex: 1.234
D
D
DO
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