A statistics teacher claims that, on average, 20% of students in his class get an A, 25% get a B, 35%get a C, 10% get a D and the rest get an F. The grades of a random sample of his students over theyears is recorded. Test the claim at 5% significance.Round to the fourth as needed.CategoriesABсDFObservedFrequency453695941ExpectedFrequencyTest Statistic:Degrees of Freedom:p-val:Decision Rule: Select an answerDid something significant happen? Select an answerThere Select an answer enough evidence to concludeSelect an answer

Goodness of fit is very powerful test for testing the significance of the discrepancy between theory…

tics teacher cla ms that, on average, 20% of his class get an A, 25 get a B, 35% get a C, 10% get a D and the rest get an F. The grades of a random sample of his students over the years is recorded. Test the claim at 5% significance. Round to the fourth as needed. Observed Categories Frequency A B с D F 45 36 95 9 41 Expected Frequency Test Statistic: Degrees of Freedom: p-val: Decision Rule: Select an answer Did something significant happen? Select an answer There Select an answer enough evidence to conclude Select an answer

tics teacher cla ms that, on average, 20% of his class get an A, 25 get a B, 35% get a C, 10% get a D and the rest get an F. The grades of a random sample of his students over the years is recorded. Test the claim at 5% significance. Round to the fourth as needed. Observed Categories Frequency A B с D F 45 36 95 9 41 Expected Frequency Test Statistic: Degrees of Freedom: p-val: Decision Rule: Select an answer Did something significant happen? Select an answer There Select an answer enough evidence to conclude Select an answer

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 7E

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