Twenty percent of americans ages 25 to 74 have high blood pressure. if 16 randomly selected americans ages 25 to 74 are selected, find each probability.

a. one half will have high blood pressure.

Step-by-step explanation:

This is a binomial probabilty distribution problem.

The formula is:

Where

n is the total number of trials

r is the number of trials we want

p is the probabilty of success

q is 1 - p [probability of failure]

Here, we take 16 people, so n = 16

we want probability of hallf will have high blood pressure, that is 16*0.5 = 8

so r = 8

p is probabilty of that happening, which is 20% , p = 0.2

q = 1 - 0.2 = 0.8

Now putting into formula, we have:

Hence

probability one half will have high blood pressure is 0.0055

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock

the first option i believe

step-by-step explanation: