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!
Question: Seasonal Dyslexia. Researchers at the University of Arkansas theorize that exposure to influenza and other viral diseases in the second trimester of pregnancy may be a factor increasing the odds that the child will be dyslexic. (Dyslexia is a reading disability, defined as a reading score on standard tests falling at least two years behind the expected level, despite a normal IQ.) One piece of evidence that could support this would be a high rate of dyslexia in children born in the summer months, because the second trimester would have fallen in the influenza season.
Design an observational study to examine this conclusion. Assume that this will be a case-control study with a random sample of dyslexic boys compared to an equally sized random sample of nondyslexic boys. Compare the frequency of births in June, July, and August with the frequency of births in December, January, and February. Ignore births in the other months. In the control group, you expect about 50% to be born in the summer months. How large should each sample be if you wish to detect a twofold difference in the odds?
What is the population of interest for the local government?- What sampling frame did the government use for the survey?
For value 10,40,20,50 and 40, value of arithmetic mean is? Simplest measure of dispersion is the Standard deviation, variance, Quartile deviation.
What would bee the chances of making at least one Type I error if the Type I error for each was .05 and the tests were independent? Are the tests independent and how does independence/non-independence affect the probability of b?
The Web-based company Oh Baby! Gifts has a goal of processing 95 percent of its orders on the same day they are received. If 485 out of the next 500 orders are processed on the same day
How will your survey design affect the regression analysis of the data? How do you propose to analyze the data? Are there other explanatory variables.
Twelve case of leukemia are reported in people living in a particular census tract over a five year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cance-incidence rates?
how large a sample should be taken if the population mean is to be estimated with 90 confidence to within 79? the
(a) Prove that any intersection of topologies on a set is a topology. (b) Prove that for any collection U of subsets of a set X , there is a smallest topology on X including U , using part (a) (rather than subbases).
Considering the four weights and assuming the weights are independent with a constant variance, obtain the least square weights of A and B.
let x and y be independent and identically distributed random variables with common standard normal pdf offz
If 20 customers were selected at random during one business day, what is the probability that at least 11 of them did not order a pastry with their drink.
Should you use a two tailed test versus the one tailed test? If the hypothesis is non-directional and you predict a difference between the means but do not specify which mean will be higher a two tailed test should be used.
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