Two teaching methods and their effects on science test scores are being reviewed. A group of...
Two teaching methods and their effects on science test scores are being reviewed. A group of students is taught using interactive simulation software. A second group of students is taught in traditional lab sessions. The science test scores for the two groups are given below. At α = 0.05, can you support the claim that the mean science test score is higher for students taught using the interactive software than it is for students taught using the traditional lab method? Assume the samples are random and independent, the populations are normally distributed and assume the population variances are equal.
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Interactive simulation software Traditional Lab
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Two teaching methods and their effects on science test scores
are being reviewed. A group of...
Two teaching methods and their effects on science test scores are being reviewed. A random sample...
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 14 students, taught in traditional lab sessions, had a mean test score of 78.9 with a standard deviation of 5.5. A random sample of 7 students, taught using interactive simulation software, had a mean test score of 84.5 with a standard deviation of 5.3. Do these results support the claim that the mean science test score is lower for students taught in traditional...
Two teaching methods and their effects on science test scores are being reviewed. A random sample...
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 12 12 students, taught in traditional lab sessions, had a mean test score of 71.7 71.7 with a standard deviation of 4.8 4.8 . A random sample of 14 14 students, taught using interactive simulation software, had a mean test score of 82.3 82.3 with a standard deviation of 3.8 3.8 . Do these results support the claim that the mean science test...
A group of third grade students is taught using a new curriculum. A control group of third grade Old Curriculum New Curriculum 6 3 72 4 8 students is taught using the old curriculum. T...
A group of third grade students is taught using a new curriculum. A control group of third grade Old Curriculum New Curriculum 6 3 72 4 8 students is taught using the old curriculum. The reading test scores for the two groups are shown in 88554310 5 68 the back-to-back stem-and-leaf plot. At a 0.10, is 987544106 00 1255688899 there enough evidence to support the claim that the new method of teaching reading produces higher reading test scores than the...
10. A science teacher claims that the mean scores on a science assessment test for fourth grade boys and girls a...
10. A science teacher claims that the mean scores on a science assessment test for fourth grade boys and girls are equal. The mean score for 13 randomly selected boys is 151 with a standard deviation of 36, and the mean score for 15 randomly selected girls is 149 with a standard deviation of 34. At a 0.01, can you reject the teacher's claim? Assume the populations are normally distributed and the population variances are not equal. Но Type of...
As a researcher, your goal is to estimate the effect of a drug on test scores...
As a researcher, your goal is to estimate the effect of a drug on test scores of human subjects undertaking a test in Statistics. All subjects were divided into two populations X and Y , with members of population X receiving the drug prior to testing and members of population Y receiving a placebo prior to testing. 16 subjects were chosen randomly from population X and the mean score in this group was equal to 9.78, with the sample standard...
Next term, there are two sections of STAT 260 - Research Methods being offered. One is...
Next term, there are two sections of STAT 260 - Research Methods being offered. One is taught by Professor Smith and the other by Professor Jones. Last term, the class average from Professor Smith's section was higher. You want to test whether or not this difference is significant. A significant difference is one that is not likely to be a result of random variation. The scores from last year's classes are given in the table below. Test the claim that...
Problem Set 1: The independent-samples t test Research Scenario: A learning psychologist is interested in comparing the success of two different mnemonics (memorization methods) on performance in a me...
Problem Set 1: The independent-samples t test Research Scenario: A learning psychologist is interested in comparing the success of two different mnemonics (memorization methods) on performance in a memory task. He assigns students to two groups, one which learns and uses a language-based rhyming memory technique, and one which learns and uses a visual “method of loci” spatial memory technique. He then administers a memory task to each group of students. The students are scored based on the percentage of...
Easier Professor - Significance Test (Raw Data, Software Required): Next term, there are two sections of...
Easier Professor - Significance Test (Raw Data, Software Required): Next term, there are two sections of STAT 260 - Research Methods being offered. One is taught by Professor Smith and the other by Professor Jones. Last term, the class average from Professor Smith's section was higher. You want to test whether or not this difference is significant. A significant difference is one that is not likely to be a result of random variation. The scores from last year's classes are...
DATA DATA: ( You will have to paste it to a text editor and format it to be entered into statcru...
DATA
DATA: ( You will have to paste it to a text editor and format it
to be entered into statcrunch - sorry for inconvenience but I could
not find another way to post the data)
Strategy Code Score
C 1 45
C 1 53
C 1 72
C 1 55
C 1 67
C 1 53
C 1 66
C 1 54
C 1 53
C 1 67
C 1 60
C 1 64
C 1 69
C 1...
DATA: ( You will have to paste it to a text editor and format it to be entered into statcrunch - ...
DATA: ( You will have to paste it to a text editor and format it
to be entered into statcrunch - sorry for inconvenience but I could
not find another way to post the data)
Strategy Code Score
C 1 45
C 1 53
C 1 72
C 1 55
C 1 67
C 1 53
C 1 66
C 1 54
C 1 53
C 1 67
C 1 60
C 1 64
C 1 69
C 1 52...
Two teaching methods and their effects on science test scores are being reviewed. A random sample of 14 students, taught in traditional lab sessions, had a mean test score of 78.9 with a standard deviation of 5.5. A random sample of 7 students, taught using interactive simulation software, had a mean test score of 84.5 with a standard deviation of 5.3. Do these results support the claim that the mean science test score is lower for students taught in traditional...
A group of third grade students is taught using a new curriculum. A control group of third grade Old Curriculum New Curriculum 6 3 72 4 8 students is taught using the old curriculum. The reading test scores for the two groups are shown in 88554310 5 68 the back-to-back stem-and-leaf plot. At a 0.10, is 987544106 00 1255688899 there enough evidence to support the claim that the new method of teaching reading produces higher reading test scores than the...
10. A science teacher claims that the mean scores on a science assessment test for fourth grade boys and girls are equal. The mean score for 13 randomly selected boys is 151 with a standard deviation of 36, and the mean score for 15 randomly selected girls is 149 with a standard deviation of 34. At a 0.01, can you reject the teacher's claim? Assume the populations are normally distributed and the population variances are not equal. Но Type of...
DATA
DATA: ( You will have to paste it to a text editor and format it
to be entered into statcrunch - sorry for inconvenience but I could
not find another way to post the data)
Strategy Code Score
C 1 45
C 1 53
C 1 72
C 1 55
C 1 67
C 1 53
C 1 66
C 1 54
C 1 53
C 1 67
C 1 60
C 1 64
C 1 69
C 1...
DATA: ( You will have to paste it to a text editor and format it
to be entered into statcrunch - sorry for inconvenience but I could
not find another way to post the data)
Strategy Code Score
C 1 45
C 1 53
C 1 72
C 1 55
C 1 67
C 1 53
C 1 66
C 1 54
C 1 53
C 1 67
C 1 60
C 1 64
C 1 69
C 1 52...
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