A card is selected at random from a deck of 10 cards numbered 1 through 10 Find the probability that the card is 4

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false