Answer:
See graph attached
Step-by-step explanation:
Point estimate (average) = $750
Standard deviation = $85
P(X>$825) = ?
Z = (X-mean)/Standard deviation = (825-750)/85 ≈ 0.88
From Z-table, P(X=825) = 0.8106
Therefore,
P(X>$825) = 1 - P(X=$825) = 1-0.8106 = 0.1894 = 18.94%
Percentage of teachers earning more than $825 is 18.94%.
Answer:
A. (5 1/2x2)+(2 1/4x2)=x
x=15 1/2
B. 5 1/2 x 2 1/4= 12 3/8
Step-by-step explanation:
Answer:
<h2>
A. is a list of population elements from which the sample will be drawn</h2>
Step-by-step explanation:
Sampling frame is the list of people or items from which a sample is taken.
Sampling is used because it is almost impossible to study entire population. Sampling allows us to find information about a population on the basis of results from a subset of the population, without studying every individual. It is easier and cost effective process.
