What is the significance and the confidence intervals

Reference no: EM133624207

1) Why might the t-test be more useful in actual practice rather than a z-test?

After watching this video answer the following:

What is the significance and the confidence intervals telling you about the two classes with regard to their scores on the quiz?

If one of these classes was a class you taught and your principle asked you to interpret this data what might you say?

3) Explain a detailed answer as to why we might run an ANOVA over a t-test and what factors are in consideration in choosing an ANOVA instead of a t-test.

4) Why do we run a post-hoc test when after having calculated an ANOVA that found statistically significant results?

What is the significance of a post-hoc test containing zero within the confidence intervals?

5) After reading the below scenario, write out which statistical test you would use.

"Researchers have noticed that there appears to be a regular, year-by-year increase in the average IQ for the general population. To evaluate the size of the effect, a researcher obtained a 10-year old IQ test that was standardized to produce a mean IQ of μ = 100 for the population 10-years ago. The test was then given to a sample of n = 64 of today's adults. The average score for the sample was M = 107 with s = 12. Based on the sample, is the average IQ for today's population significantly different from the average 10 years ago when the test would have produced a mean of μ = 100?"

Reference no: EM133624207

Questions Cloud

Find a real-world example of the bystander : Find a real-world example of the Bystander Effect (other than Kitty Genovese) and thoroughly describe the event and how it fits the definition/components

Explain marketing strategies : Clear and measurable marketing objectives that address the Blackberry's marketing challenge and align with the company's overall goals.

Write the description of two roles observed in the group : Write the description of two roles observed in the group. Be sure to first write whether they were task, maintenance, or individual (negative)

What you learn and how can you use that experience in future : What experience have you had accommodating diversity on a team? What did you learn and how can you use that experience in the future?

What is the significance and the confidence intervals : What is the significance and the confidence intervals telling you about the two classes with regard to their scores on the quiz?

Develop a personal leadership development plan : Based on the insights gained from the research, case study analysis, and simulation exercise, students will develop a personal leadership development plan.

Analyze a variety of situations for dyson uk : Explain the role of marketing, how it fits into the management of organizations, and how it interacts with other functions within DYSON UK.

Guide programs to increase student achievement : School counselors have access to a wide variety of intelligence and aptitude testing tools. It is important for school counselors to identify those

Darryl was diagnosed with chronic pancreatitis : Darryl was diagnosed with Chronic Pancreatitis. What are 2 dietary recommendations for him? Give the rationale for each.

User Account

All Pages