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 10% significance.Round to the fourth as needed.CategoriesABсDFObservedFrequency4133921029ExpectedFrequencyTest 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

Given that, A statistics teacher claims that, 20% of the students get an A 25% of the students get a…

Answered: 10% get a D and the rest get an F. The…

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 10% significance.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 42PFA

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Question

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 10% significance.
Round to the fourth as needed.
Categories
A
B
с
D
F
Observed
Frequency
41
33
92
10
29
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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