Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. Calculate the sample size needed given these factors:
•Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the smaller sample. 2. Calculate the sample size needed given these factors:
•Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size. Give your rationale for your selected beta/alpha ratio. Indicate the resulting alpha and beta. Give an argument that your study is worth doing with the smaller sample. 3. In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses. For each design, specify and justify each of the four factors and calculate the estimated sample size you'll need. Give reasons for any parameters you need to specify for G*Power.
Weights are distributed normal with a mean of 132 pounds and a standard deviation of 27.4 pounds. In a random sample of 150, how many of them would be expected to weigh between 100 and 115 pounds?
If two events are collectively exhaustive, what is the probability that both occur at the same time?
Find the mean/standard error of the sampling distribution of the proportion. Assume that 26% of students at a university wear contact lenses. We randomly pick 300 students.
At Ajax Spring Water, a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. The filling process follows a normal distribution with a known process standard deviation of 4 ml.
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
Explain the concept of "Regression Analysis", its types (3 types at least), applications and usefulness. Provide real application of its usage. Some times, Maximum likelihood estimation is not applicable, Explain and provide an example?
Do the data from this sample provide evidence for a significant increase in REM activity during exams? Use a one-tailed test with _ = .01. B.) Compute Cohen's d to estimate the size of the effect.
Is this correlation statistically significant? He also found the regression coefficient to be -1.66. Is this regression coefficient statistically significant? Explain why or why not for each.
The standard screening test for Down's syndrome is based on a combination of maternal age and the level of serum alpha fetoprotein. Using the test 80% of Down's syndrome cases can be identified while 5% of normals are detected as positives.
You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience?
Use the relative frequency approach to construct a probability distribution and show that it satisfies the required condition. Find the expected value of the number of tests taken.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd