ypothesis Test ppose population 1 consists of all students who picked up all the tests they completed prior to taking the final exam. Suppose population 2 consists of all students who had one or more tests that they completed that were not picked up prior to taking the final exam. Based on years of grading final exams and observing grades, STAT 210 instructors conjecture that mean final exam grade for all students who picked up all their tests is greater than the mean final exam de for all students who had one or more tests that were not picked up. simple random sample of 56 students who picked up all tests they completed was selected, and the mean score on final exam for this sample of students was 83 with a standard deviation of 10.4. An independent simple random sample of 51 students who had one or more tests that were not picked up was selected, and the mean score on the final exam for this sample of students was 67 with a standard deviation of 24.2. Both distributions are skewed heavily to the left. If appropriate, use this information to test the hypotheses stated in question 10 at the a = .01 level of significance. 10 State the appropriate null and alternative hypotheses that should be tested Ho: x₁=vs. H: ₁ > ₂ O O O O O O Ho: H₁ H₂vs. Hai H₁ H₂ Ho: H₁ H₂vs. Ha: H₁ H₂
ypothesis Test ppose population 1 consists of all students who picked up all the tests they completed prior to taking the final exam. Suppose population 2 consists of all students who had one or more tests that they completed that were not picked up prior to taking the final exam. Based on years of grading final exams and observing grades, STAT 210 instructors conjecture that mean final exam grade for all students who picked up all their tests is greater than the mean final exam de for all students who had one or more tests that were not picked up. simple random sample of 56 students who picked up all tests they completed was selected, and the mean score on final exam for this sample of students was 83 with a standard deviation of 10.4. An independent simple random sample of 51 students who had one or more tests that were not picked up was selected, and the mean score on the final exam for this sample of students was 67 with a standard deviation of 24.2. Both distributions are skewed heavily to the left. If appropriate, use this information to test the hypotheses stated in question 10 at the a = .01 level of significance. 10 State the appropriate null and alternative hypotheses that should be tested Ho: x₁=vs. H: ₁ > ₂ O O O O O O Ho: H₁ H₂vs. Hai H₁ H₂ Ho: H₁ H₂vs. Ha: H₁ H₂
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Hypothesis Test
Suppose population 1 consists of all students who picked up all the tests they completed prior to
taking the final exam. Suppose population 2 consists of all students who had one or more tests
that they completed that were not picked up prior to taking the final exam.
Based on years of grading final exams and observing grades, STAT 210 instructors conjecture that
the mean final exam grade for all students who picked up all their tests is greater than the mean final exam
grade for all students who had one or more tests that were not picked up.
A simple random sample of 56 students who picked up all tests they completed was selected, and
the mean score on final exam for this sample of students was 83 with a standard deviation of
10.4. An independent simple random sample of 51 students who had one or more tests that
were not picked up was selected, and the mean score on the final exam for this sample of
students was 67 with a standard deviation of 24.2. Both distributions are skewed heavily to
the left. If appropriate, use this information to test the hypotheses stated in question 10 at the
a = .01 level of significance.
10
State the appropriate null and alternative hypotheses that should be tested
Ho:₁ vs. Ha:x>x
Ho: μι = μ.vs. Ha: Mε < με
Ho: x₁= x₂vs. Ha: x₁ + x₂
Ho: x₁= x₂vs.Ha: x₁ < x₂
Ho: H₁ H₂vs. Ha: H₁> H₂
=
Ho: H₁ H₂vs. Ha: H₁ H₂
=
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