How many participants were in this study

Reference no: EM133320197

Case Study: A study was done to see if the average coffee drinker stayed awake for more hours per day than those who did not drink coffee. The study's results can be summarized as follows: The coffee drinkers in the present study were awake for an average of 17.8 hours per day (SD - 1.4), compared to non-coffee drinkers in the population that are awake for 14 hours on average (SD-1.3). The _test revealed that the than coffee drinkers were awake for significantly more hours per day. t(28) - 2.6, p <.05, 95% CI [14, 19]. d=0.15. From this statement, answer the following questions.

Question 1. How many participants were in this study?

Question 2. What does the number for question 2 suggest about the shape of the t-distributions in this test?

Question 3. There's a 95% probability that the mean hours awake for coffee drinkers is between 14 and 19 hours per day

Question 4. The difference between the coffee drinkers and non-coffee drinkers' hours awake can be considered large, according to the statistical test

Reference no: EM133320197

Questions Cloud

What is the average dms odor threshold : What is the average (mean) DMS odor threshold, ?? , for all untrained people?

Consultant being credible and consultant being competent : What is the difference between a consultant being credible and a consultant being competent? How would you convince a potential client

How rapidly expanding sales can drain cash resources of firm : Explain how rapidly expanding sales can drain the cash resources of a firm. Discuss the relative volatility of short- and long-term interest rates.

Performance data inspection work performance information : A project manager discovered that a vendor was behind schedule by a month and would miss next week's deliverable.

How many participants were in this study : How many participants were in this study? What does the number for question 2 suggest about the shape of the t-distributions in this test?

Resource Calendar as part of your project plan : Include a Resource Calendar as part of your project plan. The resource calendar identifies key resources needed for the project and the times/durations

Key success factors of tesla : Identify 5 variables that are critical factors to succeed in the target industry. Rate each direct competitor on each variable using a 1-5 scale

The economic structure and life cycle stage of tesla : Identify the industry's economic structure: monopoly, duopoly, oligopoly, or fragmented.

Risk management group develops risk management plan : Once the risk management group develops a risk management plan, the process of managing risk is a fairly static process.

User Account

All Pages