According to the WHO MONICA Project the mean blood pressure for people in China is 128 mmHg with a standard deviation of 15mmHg (Kuulasmaa, Hense & Tolonen, 1998). Blood pressure is normally distributed.

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

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step-by-step explanation: