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Answer:
In total, they will be able to cut 7 posters.
Step-by-step explanation:
Mr. Parker's class has 7 feet of white paper and 8 feet of yellow paper to make posters.
If they cut the paper into 2-foot posters, then from 8 feet of yellow paper they will make posters.
Now, from the 7 feet white paper if they cut 2-foot posters then they will make 3 posters maximum as .
Therefore, in total, they will be able to cut (4 + 3) = 7 posters. (Answer)
The probability that a randomly selected person with a kidney stone will take longer than 16 days to pass it is 0.15866 , the minimum number for the upper quarter of the time to pass a kidney stone days is 14.4 .
<h3>What is Probability ?</h3>Probability is the measure of likeliness of an event to happen
Let X denote the time to pass the kidney stone.
The random variable X follows normal Distribution
mean = 12 days days
standard deviation = 4 days
The distribution of X is X - N ( 12 , 4)
The probability that a randomly selected person with a kidney stone will take longer than 16 days to pass it is
P ( X > 16) = 1 - P( X ≤ 16)
= 1 - P( Z ≤ (16-12)/4)
= 1 - P ( Z ≤ 1 )
= 1 - 0.84134
= 0.15866
P( X < x₀) = 0.75
Using the excel function the z score for the area 0.75 is
z - score = 0.6745
x₀ = 0.6 * 4 + 12
x₀ = 14.4
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