A group of third grade students is taught using anew curriculum. A control group of third gradestudents is taught using the old curriculum. Thereading test scores for the two groups are shown inthe back-to-back stem-and-leaf plot. At a= 0.01, isthere enough evidence to support the claim that the 999997416011125789999new method of teaching reading produces higherreading test scores than the old method does?Assume the population variances are equal.Complete parts (a) through (e) below. Assume thesamples are random and independent, and thepopulations are normally distributed.OldNew CurriculumCurriculum33604776654310569700066679857Key: 4|7|0 = 74 Old and 70 NewThe null hypothesis, Ho, is u1 H2. The alternative hypothesis, Ha, is H,

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Description: A group of third grade students is taught using anew curriculum. A control group of third gradestudents is taught using the old curriculum. Thereading test scores for the two groups are shown inthe back-to-back stem-and-leaf plot. At a= 0.01, isther

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Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

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A group of third grade students is taught using a
new curriculum. A control group of third grade
students is taught using the old curriculum. The
reading test scores for the two groups are shown in
the back-to-back stem-and-leaf plot. At a= 0.01, is
there enough evidence to support the claim that the 999997416011125789999
new method of teaching reading produces higher
reading test scores than the old method does?
Assume the population variances are equal.
Complete parts (a) through (e) below. Assume the
samples are random and independent, and the
populations are normally distributed.
Old
New Curriculum
Curriculum
33
6047
76654310569
700066679
857
Key: 4|7|0 = 74 Old and 70 New
The null hypothesis, Ho, is u1 H2. The alternative hypothesis, Ha, is H, <H2.
Which hypothesis is the claim?
The alternative hypothesis, Ha
The null hypothesis, Ho
(b) Find the critical value(s) and identify the rejection region(s).
Enter the critical value(s) below.
(Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)

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