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3. In some tests of healthy, elderly men, a new drug has restored their memories almost to he level of young adults. The medication will soon be tested on patients with Alzheimer's disease, the atal brain disorder that eventually destroys the minds of those afflicted. According to Dr. Gary Lynch of he University of California, Irvine, the drug, called ampakine CX-516, accelerates signals between brain ells and appears to significantly sharpen memory. In a preliminary test on students in their early 20s nd on men aged 65-70, the results were particularly striking. The accompanying data are the numbers f nonsense syllables recalled after 5 minutes for ten men in their 20s and ten men aged 65-70 who had een given a mild dose of ampakine CX-516. Do the data provide sufficient evidence to conclude that there is a difference in the number of nonsense yllables recalled by men in the two age groups when older men have been given ampakine CX-516? Use he most efficient test. Explain your rationale! Make a conclusion in the context of the problem. Show he five steps. Age Group Number of syllables recalled 11 7 6 8 6 9 2 10 3 6 1 9 8 8 7 8 5 7 20s 65-70 (with ampakine CX-516) 10 3

3. In some tests of healthy, elderly men, a new drug has restored their memories almost to he level of young adults. The medication will soon be tested on patients with Alzheimer's disease, the atal brain disorder that eventually destroys the minds of those afflicted. According to Dr. Gary Lynch of he University of California, Irvine, the drug, called ampakine CX-516, accelerates signals between brain ells and appears to significantly sharpen memory. In a preliminary test on students in their early 20s nd on men aged 65-70, the results were particularly striking. The accompanying data are the numbers f nonsense syllables recalled after 5 minutes for ten men in their 20s and ten men aged 65-70 who had een given a mild dose of ampakine CX-516. Do the data provide sufficient evidence to conclude that there is a difference in the number of nonsense yllables recalled by men in the two age groups when older men have been given ampakine CX-516? Use he most efficient test. Explain your rationale! Make a conclusion in the context of the problem. Show he five steps. Age Group Number of syllables recalled 11 7 6 8 6 9 2 10 3 6 1 9 8 8 7 8 5 7 20s 65-70 (with ampakine CX-516) 10 3

Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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3. In some tests of healthy, elderly men, a new drug has restored their memories almost to he level of young adults. The medication will soon be tested on patients with Alzheimer's disease, the atal brain disorder that eventually destroys the minds of those afflicted. According to Dr. Gary Lynch of he University of California, Irvine, the drug, called ampakine CX-516, accelerates signals between brain ells and appears to significantly sharpen memory. In a preliminary test on students in their early 20s nd on men aged 65-70, the results were particularly striking. The accompanying data are the numbers f nonsense syllables recalled after 5 minutes for ten men in their 20s and ten men aged 65-70 who had een given a mild dose of ampakine CX-516. Do the data provide sufficient evidence to conclude that there is a difference in the number of nonsense yllables recalled by men in the two age groups when older men have been given ampakine CX-516? Use he most efficient test. Explain your rationale! Make a conclusion in the context of the problem. Show he five steps. Age Group Number of syllables recalled 11 7 6 8 6 9 2 10 3 6 1 9 8 8 7 8 5 7 20s 65-70 (with ampakine CX-516) 10 3
Transcribed Image Text:3. In some tests of healthy, elderly men, a new drug has restored their memories almost to he level of young adults. The medication will soon be tested on patients with Alzheimer's disease, the atal brain disorder that eventually destroys the minds of those afflicted. According to Dr. Gary Lynch of he University of California, Irvine, the drug, called ampakine CX-516, accelerates signals between brain ells and appears to significantly sharpen memory. In a preliminary test on students in their early 20s nd on men aged 65-70, the results were particularly striking. The accompanying data are the numbers f nonsense syllables recalled after 5 minutes for ten men in their 20s and ten men aged 65-70 who had een given a mild dose of ampakine CX-516. Do the data provide sufficient evidence to conclude that there is a difference in the number of nonsense yllables recalled by men in the two age groups when older men have been given ampakine CX-516? Use he most efficient test. Explain your rationale! Make a conclusion in the context of the problem. Show he five steps. Age Group Number of syllables recalled 11 7 6 8 6 9 2 10 3 6 1 9 8 8 7 8 5 7 20s 65-70 (with ampakine CX-516) 10 3
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