A drug company is advertising that its snore-curing product has a success rate of at least 90%. A doctor has been prescribing the product to his customers, however she's disap- pointed with the results. She decides to do an experiment on a random sample of 50 snorers. She puts them on a course to use the product in 2 weeks. After that, she calls them back to see whether the snoring has stopped. The results were: 42 stopped snoring and the rest still had it.

Does the doctor has sufficient evidence to claim that the drug company's advertisement was misleading at 5% significance level?

Answer rating: 100% (QA)

SOLUTION 1 The drug company claims a success rate of at least 90 This implies the true ... View the full answer