The following probabilities are based on data collected from U.S. adults. Individuals are placed into a weight category based on
1 answer:
Answer:
<em>The probability that a randomly selected U.S. adult is not underweight is 0.979</em>
Step-by-step explanation:
<u>Probability Distribution</u>
Four events were measured and their probabilities computed as follow
Please note the sum of the probabilities is 1, thus the distribution is correctly expressed. We want to compute the probability that a randomly selected U.S. adult is not underweight.
Knowing the adult doesn't belong to the underweight category, then they must belong to any of the other categories, thus the probability is the sum of their individual probabilities or (easily computed), the total probability minus the underweight probability:
The probability that a randomly selected U.S. adult is not underweight is 0.979
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Answer:
Step-by-step explanation:
a² - b² = (a+ b)(a - b)
1) (2n-4/2n) ÷ (n^2-4/n)
2) [y^2-36/y^2-49] ÷[ y+6/y-7]
3) [m^2-1/ m^2-m] ÷ [m^2-7m-8/3m ]
Hint : m² - 7m - 8
sum = -7
Product = -8
Factor = (-8), 1
m² - 7m - 8 =m² - 8m + m - 8
= m*(m - 8) + (m-8)
= (m - 8)(m +1)