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!
In controlling the quality of a new drug, a dose of medicine is supposed to contain an average of 247 parts per million (ppm) of a certain chemical. If the concentration is higher than 247 ppm, the drug may cause some side effects; and if the concentration is below 247 ppm, the drug may be ineffective.
The manufacturer wants to check whether the average concentration in a large shipment is the required 247 ppm or not. A random sample of 60 portions is tested, and the sample mean is found to be 250 ppm and the sample standard deviation 12 ppm. Test the null hypothesis that the average concentration in the entire large shipment is 247 ppm versus the alternative hypothesis that it is not 247 ppm using a level of significance α = 0.05.
Do the same using α = 0.01. What is your conclusion? What is your decision about the shipment? If the shipment were guaranteed to contain an average concentration of 247 ppm, what would your decision be, based on the statistical hypothesis test? Explain.
compute the standard error of the estimate of the data below.x values 41 55 61 68 82y values
List the advantages and disadvantages of systematic sampling. List the advantages and disadvantages of stratified sampling. List the advantages and disadvantages of cluster sampling.
As a result of recent campus safety concerns at Capella University, you have been engaged by campus security team leaders to gather and analyze data about on-campus crime rates in schools in the state of Minnesota. Crime data from 181 Minnesota ca..
The following data are the percentages of employees involved in worker participation programs in a sample of firms. Draw a stem-and-leaf display of the data.
An annexation suit is being considered against a county subdivision of 600 residencies by a neighboring city. If 40% of the residents favor being annexed and if a random sample of 15 will be collected,
How large a sample should be tested in order to be 99% confident that the true proportion of inedible fish is estimated to within 7%? Use 2.575 as the critical value for a 99% confidence interval.
waiting times to receive food after placing an order at the local subway sandwich shop follow an exponential
Would you be able to assist me in completing a 5 step hypothesis test on both hypotheses (1 parameter & another with 2 or more)? In completing this test, I need to explain how to complete it.
An article in Psychology and Marketing describes four variables that have been found to impact the effectiveness of commercials for high-performance auto- mobiles:
two balls are drawn with replacement and without replacement from an urn containing 8 balls of which 5 are white and 3
Average of $800 per month and a standard deviation of $50 per month. Find the probability that a randomly selected month had a personal call expense that falls below $650.
The current average processing time at the drive through is 3 min. The manager wants to reduce this processing time to 2 min.
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