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!
Q1) As part of contract negotiations, management claims that mean annual salary for clerical workers is $30,000. Union would like to illustrate the mean is lower. Random sample of 17 annual clerical salaries is collected and results sample mean of $28,157 and standard deviation of $3500. Is this enough evidence to support Union's position? Use significance level of a = 0.05. You may suppose the mean annual salaries are normally distributed.
Q2) It is usually accepted that convicted burglars spend average of 18.7 months in jail. To check this claim researcher takes random sample of 50 such cases from court files and determines that x-bar = 20.5 months. Supposing σ is known to be 7.9 months; does sample evidence support belief that average stay is 18.7 months at the 0.025 level of significance?
Determine the following probabilities: Events A and B are mutually exclusive events defined on common sample space.
a) Find the marginal density of Y. b) Find E(X) HINT: What is E (X|Y=y) ?
If person is selected at random and tested, determine the probability of that person having an IQ score between 85 and 115. Make use of EXCEL to help determine the probability.
Create a scatter plot for those data. Based on scatter plot, how would you explain relationship between the two variable.
Find out 90% confidence interval for mean grade of all the students in the class.
Letting μ be the mean composite satisfaction rating for the gaming console, we find that the test should be H o : μ ≤ 42 versus H a : μ > 42
What would you recommend Taylor do to cut back its labor cost? (Illustrate using an ABC plan.)
Calculate the population mean and population standard deviation.
If we repeated this procedure many, many times, only 5 percent of the 95 percent confidence intervals would fail to include the mean Math SAT score of the population of all students at this college.
Give an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
Using the EMV criteria (you wish to maximize expected profits in this case) determine what course of action that Optel should take. Make sure to state the best strategy in words.
Suppose the likelihood that any flight on Northwest Airlines arrives within 15 minutes of scheduled time is .90. We choose four flights from yesterday for study.
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