In a large city, 70% of people own a cell phone. a sociologist wishes to study the impact cell phones have on society. to get started, the sociologist randomly samples 45 people in the city. use a calculator to find the probability that of those 45 people sampled, between 33 and 36 of them own a cell phone.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

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?

If i purchase a product for $79.99 and two accessories for 9.99 and 7.00 how much will i owe after taxes applies 8.75%