C.
If you properly distribute C it will give you the above equation.
1/4 * -x = -1/4x
AND
1/4 * 2 = 1/2
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Change percentage to decimal
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75% = 0.75
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Find percentage
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75% of 300 = 0.75 x 300
75% of 300 = 225
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Answer: 225
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The answer is .90º + 90º = 180º, <span>.90º is not an obtuse angle</span>
Answer:
We need at least 243 stores.
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
The margin of error of the interval is:
For this problem, we have that:
95% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
Determine the number of stores that must be sampled in order to estimate the true proportion to within 0.04 with 95% confidence using the large-sample method.
We need at least n stores.
n is found when M = 0.04. So
Rounding up
We need at least 243 stores.
8.992254284692088 is the radius I believe
