Answer:
Then we can find the probability of interest with this difference:
And using the normal standard distribution or excel we got:
So then the probability that the sample mean would differ from the true mean by less than 28 dollars from the sample of 55 is approximately 0.390
Step-by-step explanation:
We define the variable of interest as the per capita income and we know the following properties for this variable:
and 
We want to find this probability:
We select a sample size of n=55 and we define the z score formula given by:
We can find the z score then for 20880 and 20936 and we got:
Then we can find the probability of interest with this difference:
And using the normal standard distribution or excel we got:
So then the probability that the sample mean would differ from the true mean by less than 28 dollars from the sample of 55 is approximately 0.390
Answer:
in 4 years
Step-by-step explanation:
because you should find the 20% of 150
150×20=3000
3000÷100= 30
so 20% of 150 is 30
then you keep adding 30 to the results till you reach 300
1 L = 1 dm³
1 m = 10 dm
(1 m)³ = (10 dm)³ ------> 1m³ = 1000 dm³ ------> 1m³ = 1000L
44 L *(1 m³/1000 L) = 0.044 m³
Answer is 0.044 m³.
The slope of a line parallel to the line whose equation is 6x + y = -3 is: -6.
<h3>How to Find the Slope of a Line?</h3>
When given an equation of a line, the slope (m) of the line can easily be determined if the equation is written in the slope-intercept form. The slope-intercept form of the equation of a line is expressed as: y = mx + b.
The "m" in the equation is the slope of the line.
The slope of two lines that are parallel to each other are always the same.
Rewrite the equation, 6x + y = -3
y = -3 - 6x
y = -6x - 3
The slope in 6x + y = -3 is -6. The line that is parallel to the line would also have the same slope.
Therefore, the slope of a line parallel to the line whose equation is 6x + y = -3 is: -6.
Learn more about the slope of parallel lines on:
brainly.com/question/10790818
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