The drug oxycontin (oxycodone) is used to treat pain, but it is dangerous because it is addictive and can be lethal. in clinical trials, 227 subjects were treated with oxycontin and 52 of them developed nausea (based on data from purdue pharma l. use a 0.05 significance level to test the claim that more than 20% of oxycontin users develop nausea. does the rate of nausea appear to be too high?

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?