A researcher is interested in testing the popular belief that herbal remedies like Ginko Biloba and Ginseng may improve learning and memory. She obtains a sample of 16 participants. She has each person take the herbal supplements every day for 90 days. At the end of the 90 days, each person takes a standardized memory test. For the general population, scores from the memory test form a normal distribution and they have a mean of 50 and a standard deviation of 12. The sample of the 16 research participants had an average memory score of 54.What is the z-score that corresponds to the sample mean?
A researcher is interested in testing the popular belief that herbal remedies like Ginko Biloba and Ginseng may improve learning and memory. She obtains a sample of 16 participants. She has each person take the herbal supplements every day for 90 days. At the end of the 90 days, each person takes a standardized memory test. For the general population, scores from the memory test form a normal distribution and they have a mean of 50 and a standard deviation of 12. The sample of the 16 research participants had an average memory score of 54.What is the z-score that corresponds to the sample mean?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A researcher is interested in testing the popular belief that herbal remedies like Ginko Biloba and Ginseng may improve learning and memory. She obtains a sample of 16 participants. She has each person take the herbal supplements every day for 90 days. At the end of the 90 days, each person takes a standardized memory test. For the general population, scores from the memory test form a
What is the z-score that corresponds to the sample mean?
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