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!
An environmental group is suing a manufacturer because chemicals dumped into a nearby river may be harming fish. A sample of fish from upstream (no chemicals) is compared with a sample from downstream (chemicals), and a 95% confidence interval for the difference in proportions of healthy fish is 0.01 to 0.11 (with a higher proportion of healthy fish upstream).
First, interpret this interval. The statistician for the manufacturer produces a 99% confidence interval ranging from -0.01 to +0.13 and tells the judge that because it includes 0 and because it has higher accompanying confidence than the other interval, we can't conclude that there is a problem. Comment on the statistician's conclusion.
the mean diameter of a ball bearing produced by a certain manufacturer is 0.80 cm with a standard deviation of 0.03 cm.
Identify a business research topic and define the research questions for the identified problem or opportunity - What does the relevant literature in the field indicate about this problem?
An observation from a normally distributed population is considered "unusual" if it is more than 2 standard deviations away from the mean. There are several contaminants that can harm a city's water supply.
1. Last year, the weekly price of a 4-litre container of milk averaged $3.89 with a standard deviation of $0.40. A consumer advocacy group wishes to test if the price of a 4-litre container of milk is higher compared to last year. It is assumed t..
What is the Pearson correlation coefficient and how strong is the relationship - How much of the variance in the relation between these two variables is unaccounted for?
1. the comfort widget company makes several different sized widgets. the smallest widget the company manufactures
Consider the formula used for any confidence interval and the elements included in that formula. What happens to the confidence interval if you (a) increase the confidence level, (b) increase the sample size, or (c) increase the original sample st..
Those who had consumed the vodka tonics had 35% more cravings than those who did not. Assuming that the assignment of subjects to the treatment (vodka) and control groups was made at random, do you think there are any confounding factors that would..
Determine whether or not there exists a statistically significant difference between the salaries of female and male human resource managers
What are the mean value and standard deviation of the number among these 15 that are from the second section? What are the mean value and standard deviation of the number of projects not among these first 15 that are from the second section?
Use the definition of a simple random sample to compare the chance that John and Maria will be the group selected with the chance that Maria and Bill will be the group selected.
The security department of a state university is planning its budget for the next year. In estimating the man-hours for security during university sponsored music concerts, the average length of music concerts is needed.
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