Reference no: EM131423994
Brain training. The assessment of computerized brain-training programs is a rapidly growing area of research. Researchers are now focusing on whom this training benefits most, what brain functions can be best improved, and which products are most effective. A recent study looked at 487 community-dwelling adults aged 65 and older, each randomly assigned to one of two training groups.
In one group, the participants used a computerized program 1 hour per day. In the other, DVD-based educational programs were shown with quizzes following each video. The training period lasted 8 weeks. The response was the improvement in a composite score obtained from an auditory memory/attention survey given before and after the 8 weeks.32 The results are summarized in the following table:
(a) Given that other studies show a benefit of computerized brain training, state the null and alternative hypotheses.
(b) Report the test statistic, its degrees of freedom, and the P-value. What is your conclusion using significance level α = 0.05?
(c) Can you conclude that this computerized brain training always improves a person's auditory memory better than the DVD program does? If not, explain why.
|
Estimate the average age of your stores customers
: You want to estimate the average age of your store's customers.- You ask an SRS of customers their opinions on each of two new floor plans for your store.
|
|
What is the purpose of a balanced scorecard
: HA499 Unit: Assessing Operational Needs in the Health Care Setting - Discussion Topic: Integrated Practice and Balanced Scorecard. What is the purpose of a balanced scorecard? How is the balanced scorecard used to lead and manage an organization
|
|
Do you feel like these new options are trends
: Recently, human resources (HR) recruiters have utilized their company Web site job board, online job boards, social media, and other industry-specific job boards or Web sites to fill all types of positions. As an HR recruiter, you are in need of n..
|
|
Test hypothesis that average number of critical violations
: Test the hypothesis that the average number of critical violations is less than 0.75 using a significance level of 0.05. State the two hypotheses, the test statistic, and P-value.
|
|
State the null and alternative hypotheses
: Given that other studies show a benefit of computerized brain training, state the null and alternative hypotheses.
|
|
Explain the importance of establishing ground rules
: Violated expectations are often the cause of conflict in cross-cultural teams due to the result of different cultural rules. However, unmet expectations must be managed effectively for a team to succeed. What are some of the most common behaviors ..
|
|
What actions can management take to increase motivation
: How bad is employee motivation and engagement as revealed by the Exhibit?
|
|
Examine workplace privacy
: From the second e-Activity, examine workplace privacy as it relates to emails and Internet communication. Suggest two (2) recommendations that an organization should make to its employees geared toward protecting the privacy of the organization wh..
|
|
Research question and tentative thesis
: Identify your major and briefly explain how writing about this topic might be beneficial for someone in that field (or identify if you have not yet declared a major or are a dual-enrolled student:
|