Using the z-distribution, a sample of 142,282 should be taken, which is not practical as it is too large of a sample.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:
The margin of error is:
In which:
is the sample mean.
is the standard deviation for the population.
Assuming an uniform distribution, the standard deviation is given by:
In this problem, we have a 95% confidence level, hence
, z is the value of Z that has a p-value of 
, so the critical value is z = 1.96.
The sample size is found solving for n when the margin of error is of M = 0.006, hence:
n = 142,282.
A sample of 142,282 should be taken, which is not practical as it is too large of a sample.
More can be learned about the z-distribution at brainly.com/question/25890103
#SPJ1
Answer:
the diagonal is about 6.4 units
Step-by-step explanation:
i used pythagorean theorem to solve for the diagonal
a^2 + b^2 = c^2
5^2+ 4^2 = c^2
25+16=c^2
41= c^2
square root of 41 = c
6.4=c
c is the diagonal length
Answer:
That is a counterclockwise rotation of 90 degrees about the origin.
Step-by-step explanation:
Take a point on the figure near to the origin and you can imagine the rotation and how it gets to the image.
Im pretty sure its b im soo sorry if im wrong.
Answer: It will take him 1.68 years to recover his initial investment.
First, find the amount of extra money that he will make.
34,000 - 13,000 = 21,000
He will be making an extra 21,000 per year.
Now, divide the cost of his training by the amount of his increase.
35200 / 21000 = 1.68
That gives you the amount of years it will take him to pay off his investment.
