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 Find the standardized test statistic. Round to three decimal places as needed.
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 Find the standardized test statistic. Round to three decimal places as needed.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question 49 and 50
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
Find the standardized test statistic. Round to three decimal places as needed.
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
Find the p-value. Round to four decimal places as needed.
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