According to scientific research, the probability that a person between the ages of 20 and 25 having high blood pressure, is only 17 %. In a random survey of 10 people in this age group, what is the probability that two or fewer have high blood pressure?

The probability is + + .

Step-by-step explanation:

The probability of having high blood pressure is 17%.

We need to find the probability of 2 or fewer have high blood pressure.

Possibility 1: No one have high blood pressure.

The probability is .

Possibility 2: Only one have high blood pressure.

The probability is .

Possibility 3: 2 among the 10 have the high blood pressure.

.

Any of the possibilities can happen.

Hence, the required probability is + + .

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )