Answer:
The approximate standard error of the sample proportion is
Step-by-step explanation:
From the question we are told that
The sample proportion is
The sample size is n = 100
Generally the standard error of the sample proportion is mathematically represented as
substituting values
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Answer:
<em>Addison worked 5 hours</em>
Step-by-step explanation:
<u>Proportions
</u>
A direct proportion is a relation between variables where their ratio is a constant value. This means that if y and x are proportional, then:
y = kx
Where k is the constant of proportionality.
The relationship between the number of kilograms of dough Addison prepares (y) is proportional to the number of hours he works on it (x).
Knowing he prepared y=30 kilograms of dough after t=3 hours, we substitute in the function:
30 = 3k
Solving for k:
k = 30/3 = 10
The relationship is:
y = 10x
If he prepared y=50 kg of dough, then:
50 = 10x
Solving for x
x = 50/10 = 5
Addison worked 5 hours
Answer:
2
Step-by-step explanation:
step 1) simplify
11/14-x/4=2/7
-x/4=2/7-11/14
-1/4x=-1/2
divide both sides by -1/4
x=2