A statistics graduate student conducted an experiment about graduate students who lived on campus. After taking a simple random
1 answer:
Answer: The standard error (SE) is 0.048.
Step-by-step explanation: The standard error is an error that occur by random chance. In a sample where only some of the population is "experimented", the sample proportion estimates the population proportion.
The formula to find the standard error is:
SE = , where p is the sample proportion and n is the total of the sample of the population.
The sample proportion is
p= = 0.18
So,
SE =
SE = 0.048
The standard error of this experiment is SE = 0.048
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An equation without exponents and two variables, is typically a straight line. All the points on the line with integer coordinates are solutions of the equation. Since x and y have to be positive as well, there aren't that many solutions.
Let's see where the line crosses the x-axis, it is where y=0:
x/0.5 + 0 = 18, so x=9 at the intercept. y=0 there, so this is a point on the line, but not a solution to the question (y was supposed to be positive).
Possible values for x are thus limited to 1,2,3,4,5,6 and 7. You can try them all (ie., solve the equation with them) and see for which x values the y is also positive and integer.
You will find that x=4, y=2 is the only pair that satisfies these conditions.
Let's see where the line crosses the x-axis, it is where y=0:
x/0.5 + 0 = 18, so x=9 at the intercept. y=0 there, so this is a point on the line, but not a solution to the question (y was supposed to be positive).
Possible values for x are thus limited to 1,2,3,4,5,6 and 7. You can try them all (ie., solve the equation with them) and see for which x values the y is also positive and integer.
You will find that x=4, y=2 is the only pair that satisfies these conditions.