Testing for two proportionsone hundred draws are made at

Reference no: EM13357524

Testing for two Proportions.

One hundred draws are made at random with replacement from box A, and 250 are made at random with replacement from box B.
a) 50 of the draws from box A are positive, compared to 131 from box B: 50.0% versus 52.4%. Is this difference real, or due to chance?
b) The draws from box A average 1.4 and their SD is 15.3; the draws from box B average 6.3 and their SD is 16.1. Is the difference between the averages statistically significant?

Reference no: EM13357524

Questions Cloud

Test for single meanaccording to one investigators model : test for single mean.according to one investigators model the data are like 400 draws made at random from a large box.

Test for single proportionone kind of plant has only blue : test for single proportion.one kind of plant has only blue flowers and white flowers. according to a genetic model the

Testing for population meanbookstores like education one : testing for population mean.bookstores like education one reason being that educated people are more likely to spend

Testing for equality of mean1 a computer is programmed to : testing for equality of mean.1. a computer is programmed to make 100 draws at random with replacement from the box

Testing for two proportionsone hundred draws are made at : testing for two proportions.one hundred draws are made at random with replacement from box a and 250 are made at random

Probability based on binomial distribution1 suppose that pe : probability based on binomial distribution.1 suppose that pe 0.76 pf 0.45 and pe and f 0.32. what is p e or f?2

Probability based on normal distribution1determine the area : probability based on normal distribution.1.determine the area under the standard normal curve that lies to the left of

Smple proportion and probability based on normal : sample proportion and probability based on normal distribution.a nationwide study in 2003 indicated that about 60 of

Testing for population meana quality control expert is : testing for population mean.a quality control expert is called in to determine whether a newly installed machine is

User Account

All Pages