tions #47 - 52. ing a new curriculum. A control group of third g for the two groups is shown in the back-to-back port the claim that the new method of teaching es? Assume the population variances are equal. populations are normally distributed. 4, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69

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question 47 and 48

Use the information below to answer Questions #47 - 52.
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 is shown in the back-to-back stem-and-leaf plot below. At
a = 0.01, is there enough evidence to support the claim that the new method of teaching reading produces higher
reading test scores than the old method does? Assume the population variances are equal. Assume the samples are
random and independent, and assume the populations are normally distributed.
Old Curriculum: 30, 48, 49, 50, 51, 52, 54, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69
New Curriculum: 41, 56, 57, 61, 62, 63, 64, 64, 65, 66, 66, 66, 67, 67, 69, 70, 70, 71, 72, 74, 75, 77, 78, 84, 88
What is the claim? Choose the correct answer below.
The new method of teaching reading produces lower test scores than the old method.
The new method of teaching reading produces the higher test scores than the old method.
O The new method of teaching reading produces equal test scores than the old method.
O The new method of teaching reading produces different test scores than the old method.
Transcribed Image Text:Use the information below to answer Questions #47 - 52. 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 is shown in the back-to-back stem-and-leaf plot below. At a = 0.01, is there enough evidence to support the claim that the new method of teaching reading produces higher reading test scores than the old method does? Assume the population variances are equal. Assume the samples are random and independent, and assume the populations are normally distributed. Old Curriculum: 30, 48, 49, 50, 51, 52, 54, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69 New Curriculum: 41, 56, 57, 61, 62, 63, 64, 64, 65, 66, 66, 66, 67, 67, 69, 70, 70, 71, 72, 74, 75, 77, 78, 84, 88 What is the claim? Choose the correct answer below. The new method of teaching reading produces lower test scores than the old method. The new method of teaching reading produces the higher test scores than the old method. O The new method of teaching reading produces equal test scores than the old method. O The new method of teaching reading produces different test scores than the old method.
Use the information below to answer Questions #47 - 52.
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 is shown in the back-to-back stem-and-leaf plot below. At
a = 0.01, is there enough evidence to support the claim that the new method of teaching reading produces higher
reading test scores than the old method does? Assume the population variances are equal. Assume the samples are
random and independent, and assume the populations are normally distributed.
Old Curriculum: 30, 48, 49, 50, 51, 52, 54, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69
New Curriculum: 41, 56, 57, 61, 62, 63, 64, 64, 65, 66, 66, 66, 67, 67, 69, 70, 70, 71, 72, 74, 75, 77, 78, 84, 88
Write the claim mathematically and identify the null and the alternative hypotheses. Assume that i represents the mean
of the test scores of those taught with the old curriculum and uarepresents the mean of the test scores of those taught
with the new curriculum. Choose the correct answer below.
O Ho: H1 < M2
Ha: l1 > µ2 (claim)
O Ho: H1 = µ2 (claim)
Ο H μι > μ2
Hạ: Hi < µ2 (claim)
O Ho: 41 + 42
Ha: 41 = µ2 (claim)
O Ho: 41 < 42
Ha: H1 2 42 (claim)
Ho: 41 > 42
Hạ: 41 < µ2 (claim)
Transcribed Image Text:Use the information below to answer Questions #47 - 52. 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 is shown in the back-to-back stem-and-leaf plot below. At a = 0.01, is there enough evidence to support the claim that the new method of teaching reading produces higher reading test scores than the old method does? Assume the population variances are equal. Assume the samples are random and independent, and assume the populations are normally distributed. Old Curriculum: 30, 48, 49, 50, 51, 52, 54, 55, 56, 56, 59, 61, 62, 64, 64, 65, 66, 66, 69 New Curriculum: 41, 56, 57, 61, 62, 63, 64, 64, 65, 66, 66, 66, 67, 67, 69, 70, 70, 71, 72, 74, 75, 77, 78, 84, 88 Write the claim mathematically and identify the null and the alternative hypotheses. Assume that i represents the mean of the test scores of those taught with the old curriculum and uarepresents the mean of the test scores of those taught with the new curriculum. Choose the correct answer below. O Ho: H1 < M2 Ha: l1 > µ2 (claim) O Ho: H1 = µ2 (claim) Ο H μι > μ2 Hạ: Hi < µ2 (claim) O Ho: 41 + 42 Ha: 41 = µ2 (claim) O Ho: 41 < 42 Ha: H1 2 42 (claim) Ho: 41 > 42 Hạ: 41 < µ2 (claim)
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