Answer:
The sample required is
Step-by-step explanation:
From the question we are told that
The standard deviation is
The margin of error is
Given that the confidence level is 99% then the level of significance is mathematically evaluated as
Next we will obtain the critical value from the normal distribution table(reference math dot armstrong dot edu) , the value is
The sample size is mathematically represented as
substituting values
They are parallel because they have the same slope
Are there any answer choices?
Answer:
Step-by-step explanation:
The rate of change, slope, m is
m=(y2-y1)/(x2-x1), we have points (4,5) and (21,39) so
m=(39-5)/(21-4)
m=34/17
m=2
So the rate of change is 2
Answer: A, C, and D all round to 5.6