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!
To test the effectiveness of a treatment, a sample of n=25 people is selected from a normal population with a mean of 60. After the treatment is administered to the individuals in the sample, the sample mean is found to be M=55
a. Compute Cohen's d to measure effect size for both test ( standard deviation 20 and 10)
b. If the population standard deviation is 10, can you conclude that the treatment has a significant effect? Use a two-tailed test with .05
c. If the population standard deviation is 20, can you conclude that the treatment has a significant effect? Use a two-tailed test with .05.
d. Briefly describe how the standard deviation influences the outcome of the hypothesis test. How does standard deviation influence measures of effect size?
Show the sampling distribution of if a random sample of 150 insured individuals is used to estimate the proportion having received at least one ticket.
If the mean lifetime of this type of component is 100 hours and its standard deviation is 19 hours, how many of these component must be in stock so that the probability of the system is in continual operations for the next 2,000 hours is at least ..
Caculate the expected value of the profit made by the insurance company. Many call this kind of situation a win win opportunity for the insurance company and the promoter. Do you agree? Explain.
What would be the correct null and alternative hypothesis for the following situation: The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the mean speed of all cars is greate..
You read that statistical test at α=0.01 level has probability 0.14 of making a Type II error when specific alternative is true. Calculate the power of test against this alternative?
The sales of Lexus automobiles in the Detroit area follow a Poisson distribution with a mean of 3 per day. What is the probability that for five consecutive days at least one Lexus is sold?
Please perform a hypothesis test using a .05 significance level on the following information. Next please perform a regression analysis as well as providing a scattered diagram.
The manufacturer has to replace or exchange 10% of its model I and 18% of its model II. If a model is selected at random, find the probability that it will be defective?
Students whose test scores are in the upper 10% are eligible for scholarship opportunities for college. What is the test score that corresponds to the upper 10% cutoff point of the probability distribution?
In a recent year, the FCC reported that the mean wait for repairs for AT&T customers was 25.3 hours. In an effort to improve this service, suppose that a new repair service process was developed.
If we have 2 groups with 2 characteristics each, what would our critical value be with an alpha of .025?
John Kim is the purchasing manager for your computer, Inc., a manufacture of network servers. A truckload of sheet metal has just arrived. Previous experience with the supplier suggests that the thickness of the sheet metal follows a normal distri..
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