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 99999741 6 011125789999 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 3 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 H1
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 99999741 6 011125789999 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 3 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 H1
MATLAB: An Introduction with Applications
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Transcribed Image Text: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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