2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):
2. Test at the 1% level of significance the hypothesis that the A version of the test is easier than the B version (even though the questions are the same). p-value (round to four decimal places) = Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
Related questions
Question
![Children in two elementary school classrooms were given two versions of the same
test, but with the order of questions arranged from easier to more difficult in
Version A and in reverse order in Version B. Randomly selected students from each
class were given Version A and the rest Version B. The results are shown in the table.
nx S
E
Version A 31 83 4.6
Version B 32 78 4.3
1. Construct the 90% confidence interval for the difference in the means of the
populations of all children taking Version A of such a test and of all children taking
Version B of such a test.
Lower endpoint (round to one decimal place) 3.2
=
Upper endpoint (round to one decimal place)
= 6.8
2. Test at the 1% level of significance the hypothesis that the A version of the test is
easier than the B version (even though the questions are the same).
p-value (round to four decimal places)
=
Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6f088a5e-cfef-400d-8a01-960086a6626c%2F4338c553-2bf7-4cc4-816f-e444aad4d08c%2Fcdjl39a_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Children in two elementary school classrooms were given two versions of the same
test, but with the order of questions arranged from easier to more difficult in
Version A and in reverse order in Version B. Randomly selected students from each
class were given Version A and the rest Version B. The results are shown in the table.
nx S
E
Version A 31 83 4.6
Version B 32 78 4.3
1. Construct the 90% confidence interval for the difference in the means of the
populations of all children taking Version A of such a test and of all children taking
Version B of such a test.
Lower endpoint (round to one decimal place) 3.2
=
Upper endpoint (round to one decimal place)
= 6.8
2. Test at the 1% level of significance the hypothesis that the A version of the test is
easier than the B version (even though the questions are the same).
p-value (round to four decimal places)
=
Conclusion (write "R" for reject Ho, and "F" for fail to reject Ho):
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