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 1% significance.Round to the fourth as needed.ExpectedFrequency FrequencyObservedCategoriesA55В3489D1436Test Statistic:Degrees of Freedom:p-val:Decision Rule: Select an answerDid something significant happen? Select an answerThere Select an answer venough evidence to concludeSelect an answer

It is needed to test, whether on average 20% students in class get an A, 25% get a B, 35% get a C,…

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 the years is recorded. Test the claim at 1% significance. Round to the fourth as needed. Observed Frequency Expected Frequency Categories A 55 B 34 89 D 14 F 36 Test Statistic: Degrees of Freedom: p-val: Decision Rule: Select an answer Did something significant happen? Select an answer There (Select an answer v) enough evidence to conclude Select an answer

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 the years is recorded. Test the claim at 1% significance. Round to the fourth as needed. Observed Frequency Expected Frequency Categories A 55 B 34 89 D 14 F 36 Test Statistic: Degrees of Freedom: p-val: Decision Rule: Select an answer Did something significant happen? Select an answer There (Select an answer v) enough evidence to conclude Select an answer

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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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 the years is recorded. Test the claim at 5% significance. Round to the fourth as needed. Categories A B с D F Observed Frequency 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
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