The probability that a person in the united states has type b+ blood is 1212%. threethree unrelated people in the united states are selected at random. complete parts (a) through (d).

(a)    P (all B+) = (0.12)(0.12)(0.12)=0.001728=0.1728%

(b)   P (no B+) = (0.88)(0.88)(0.88) = 0.681472=68.15%

(c)    P (not one B+) + P (no B+) = 1

P (not one B+) = 1 – P (no B+)

                             = 1 – 0.681472

P (at least 1 B+) = 0.318528=31.85%

(d)   B. The event in part (a) is unusual because its probability is less than or equal to 0.05.

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%