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!
Suppose a group of 900 smokers (who all wanted to give up smoking) were randomly assigned to receive an antidepressant drug or a placebo for six weeks. Of the 595 patients who received the antidepressant drug, 283 were not smoking one year later. Of the 305 patients who received the placebo, 100 were not smoking one year later. Given the null hypothesis H0:(pdrug?pplacebo)=0 and the alternative hypothesis Ha:(pdrug?pplacebo)?0, conduct a test to see if taking an antidepressant drug can help smokers stop smoking. Use ?=0.02,
(a) The test statistic is
(b) The P-value is
(c) The final conclusion is
A. There seems to be evidence that the patients taking the antidepressant drug have a different success rate of not smoking after one year than the placebo group.
B. There is not sufficient evidence to determine whether the antidepressant drug had an effect on changing smoking habits after one year.
a division within a transportation company is responsible for performing maintenance on the fleet of trucks used by the
1. according to a survey 63 of murders committed last year were cleared by arrest or exceptional means. fifty murders
The quality-control manager at a light bulb factory needs to determine whether the mean life of a large shipment of light bulbs is equal to 375 hours. The population standard deviation is 100 hours.
If the doctor wants to use height to predict head circumference run a linear regression on the data. Find the r-value and comment about it.
In a speech to the Chamber of Commerce, a city councilman claims that in his city less than 15% of the adult male population is unemployed.
according to u.s. news amp world report data in 1995 tuition costs at indiana university a public university were 2984
A sample of 500 respondents in a large metropolitan area was selected to study consumer behavior. Among the questions asked was "do you enjoy shopping for clothing?" Of 240 males, 136 answered yes.
Provide an overview of the problem you identified. What are some research components that could be measured in order to address the research question or hypothesis you identified? How might a researcher obtain that information?
What percentage of applicants scored below 750
What is the population from which your sample has been taken? Description of data taken from other sources. Preliminary analysis using histograms, box plots, scatter plots, etc. and investigation of outliers. Do you keep or discard identified outl..
let r be the region in the first quadrant bounded by the curves yx and yx5. a random point xy is selected from r. a
Describe the effect of an outlier or extreme value on the confidence interval - Find the probability that the return for common stocks
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