Sleep experts believe that sleep apnea is more likely to occur in men than in the general population, that is the percentage of men who suffer from sleep apnea is greater than 8%. To test this claim, one expert examined 75 men and found that 10 of these men suffer from sleep apnea. What are the Null and Alternative Hypotheses

One of every 20 customers reports poor customer service on your company’s customer satisfaction survey. you have just created a new process that should cut the number of poor customer service complaints in half. what percentage of customers would you expect to report poor service after this process is implemented? 1.) 5% 2.) 10% 3.) 2% 4.) 2.5%

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price