On average people can store about 7 words using their working memory (μ = 7). A team of researchers has hypothesized that a particular herbal supplement will increase this capacity. A sample of 30 individuals was given the herbal supplement for 2 weeks. They then completed various tasks that assess working memory. The obtained test statistic is t = 2.481, and the critical value is t = 2.462. What conclusion can the researchers make? a. Cannot be determined without knowing the sample mean. b. The herbal supplement actually worsens working memory capacity. c. The herbal supplement improves working memory capacity. d. The herbal supplement has no impact on working memory capacity.
On average people can store about 7 words using their working memory (μ = 7). A team of researchers has hypothesized that a particular herbal supplement will increase this capacity. A sample of 30 individuals was given the herbal supplement for 2 weeks. They then completed various tasks that assess working memory. The obtained test statistic is t = 2.481, and the critical value is t = 2.462. What conclusion can the researchers make? a. Cannot be determined without knowing the sample mean. b. The herbal supplement actually worsens working memory capacity. c. The herbal supplement improves working memory capacity. d. The herbal supplement has no impact on working memory capacity.
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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On average people can store about 7 words using their working memory (μ = 7). A team of researchers has hypothesized that a particular herbal supplement will increase this capacity. A sample of 30 individuals was given the herbal supplement for 2 weeks. They then completed various tasks that assess working memory. The obtained test statistic is t = 2.481, and the critical value is t = 2.462. What conclusion can the researchers make?
a.
Cannot be determined without knowing the sample mean.
b.
The herbal supplement actually worsens working memory capacity.
c.
The herbal supplement improves working memory capacity.
d.
The herbal supplement has no impact on working memory capacity.
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