what is the perimeter of a rctangle with an area of 48 square inches?a) 38 inchesb) 24 inchesc) 48 inchesd) 30 inches
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Answer:
x = 13.5 units
Step-by-step explanation:
Segment drawn to join the two sides of the triangle is parallel to third side of the triangle.
Therefore, by basic proportionality theorem:
Since we are not given any information about the proportion, we will assume the sample proportion to be 0.50
so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)
The margin of error for population proportion is calculated as:
This means 271 students should be included in the sample
so,
p = 0.50
The Error is 10% percentage point. This means that on either side of the population proportion the error is 5% so E = 0.05
z = 1.645 (Z value for 90% confidence interval)
The margin of error for population proportion is calculated as:
This means 271 students should be included in the sample