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30) You wish to use a hypothesis test at a = 0.05 to test for a significant Spearman correlation, i.e., test the hypothesis Ho: Ps= 0 versus Ha: Ps 0. The sample consists of 26 observations and results in a sample Spearman correlation of ps = -0.40. What is the p-value for the hypothesis test? A) 0.0228 B) 0.9772 C) 0.9544 D) 0.0456 E) 0.0114 2, 2023

30) You wish to use a hypothesis test at a = 0.05 to test for a significant Spearman correlation, i.e., test the hypothesis Ho: Ps= 0 versus Ha: Ps 0. The sample consists of 26 observations and results in a sample Spearman correlation of ps = -0.40. What is the p-value for the hypothesis test? A) 0.0228 B) 0.9772 C) 0.9544 D) 0.0456 E) 0.0114 2, 2023

MATLAB: An Introduction with Applications
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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30) You wish to use a hypothesis test at a = 0.05 to test for a significant Spearman correlation, i.e., test the hypothesis Ho: Ps= 0 versus Ha: Ps 0. The sample consists of 26 observations and results in a sample Spearman correlation of Ps= -0.40. What is the p-value for the hypothesis test? A) 0.0228 B) 0.9772 C) 0.9544 D) 0.0456 E) 0.0114 31) To determine if the average sales per week for store A is greater than the average sales per week for store B you take sales data on 12 weeks from each store. You test the hypothesis H, HA SMB versus Ha: MA > Mg and find a p-value of 0.62. To determine if the average sales per week depends on store, you wish to test the hypothesis Ho: A = HB versus Ha: HAMB. What is the p-value for this hypothesis test? A) 0.76 B) 0.38 C) 0.62 D) 0.31 E) 1.24 32) To determine if the proportion of undergraduate students who are left handed depends on their class standing (Freshman, Sophomore, Junior or Senior) you identify the hypothesis Ho: PFreshman = Psophomore = PJunior = Psenior Ha: Not all population proportions are equal To test the hypothesis you survey 180 students, records their class standing and ask them if they are left handed (Yes or No). The data appears in the table below (Left Handed worksheet). Left Handed Yes No Total Freshman 4 26 30 Class Standing Sophomore 6 44 50 Junior 5 35 40 Senior 6 54 60 Total 21 159 180 Using the sample data, you calculate a test statistic of 0.275. What is the p-value for the hypothesis test? A) 0.05 p-value < 0.10 B) 0.025 <p-value < 0.05 C) 0.10 <p-value < 0.90 D) 0.95<p-value < 0.975 E) 0.90 <p-value < 0.95
Transcribed Image Text:30) You wish to use a hypothesis test at a = 0.05 to test for a significant Spearman correlation, i.e., test the hypothesis Ho: Ps= 0 versus Ha: Ps 0. The sample consists of 26 observations and results in a sample Spearman correlation of Ps= -0.40. What is the p-value for the hypothesis test? A) 0.0228 B) 0.9772 C) 0.9544 D) 0.0456 E) 0.0114 31) To determine if the average sales per week for store A is greater than the average sales per week for store B you take sales data on 12 weeks from each store. You test the hypothesis H, HA SMB versus Ha: MA > Mg and find a p-value of 0.62. To determine if the average sales per week depends on store, you wish to test the hypothesis Ho: A = HB versus Ha: HAMB. What is the p-value for this hypothesis test? A) 0.76 B) 0.38 C) 0.62 D) 0.31 E) 1.24 32) To determine if the proportion of undergraduate students who are left handed depends on their class standing (Freshman, Sophomore, Junior or Senior) you identify the hypothesis Ho: PFreshman = Psophomore = PJunior = Psenior Ha: Not all population proportions are equal To test the hypothesis you survey 180 students, records their class standing and ask them if they are left handed (Yes or No). The data appears in the table below (Left Handed worksheet). Left Handed Yes No Total Freshman 4 26 30 Class Standing Sophomore 6 44 50 Junior 5 35 40 Senior 6 54 60 Total 21 159 180 Using the sample data, you calculate a test statistic of 0.275. What is the p-value for the hypothesis test? A) 0.05 p-value < 0.10 B) 0.025 <p-value < 0.05 C) 0.10 <p-value < 0.90 D) 0.95<p-value < 0.975 E) 0.90 <p-value < 0.95
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