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Create a real-world situation or problem that could be addressed using an independent- or related-samples t test. Create this situation or problem, that clearly identify the independent and dependent variables to study; explain whether an independent-samples or related samples t test is most appropriate and why; generate the statistical null and alternative hypotheses; describe what information the effect size would tell that the probability value would not tell; using realistic numbers for values of degrees of freedom; sample size, and t statistic, create hypothetical results.
Illustrate what amount of sales would be required to be a super savings club member. Elucidate amount of sales would be required to be a gold club status.
Findout either the given correlation is significant at given level of significance. Illustrate what does sample size have to do with the significance of r.
Multiple choice questions based on regression - A regression and correlation analysis resulted in the following information
A side effect of a certain anesthetic used in surgery is the hiccups, which occurs in about 10 percent of the cases. If three patients are scheduled for surgery today and are to be administered this anesthetic, compute the probability that
What internal and external threats are and could you provide some examples of what would be considered a threat to internal and/or external validity of a study design.
An elevator starts at the basement with 8 people (not including the elevator operator) and discharges them all by the time it reaches the top floor, number 6.
Duracell Ltd claim that the life of their batteries in motorised soft toys is approximately normally distributed with a mean of 102.9 hours and a standard deviation of 16.5 hours.
Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A 2 sample t-test test is run based on your data and a p-value is calculated to be 0.0219. What is the approp..
Using a normal distribution with a mean of 1118 and a standard deviation of 52 for the weights of steers, what percent of steers weigh over 1250 pounds, under 1100 pounds, between 1000 and 1150 pounds.
Identify at your place of work (or a previous place of work, or an organization with which you are affiliated). Identify a dependent variable and 3 independent variables
Suppose you were to cut up the directory and pull out one listing at random to contact.
Research has shown that the people often see a correlation between two events when one does not really exist. Why do you think this happens?
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