Answer:
They are proportional
Step-by-step explanation:
Y/X represents coordinates Y being rise X being run. So Y/X is equal to rise/run. If there was a coordinate grid, if the two points created a straight line that slant to the right I would be proportional. Since all I see is rise/run= 5 they are proportional. 5 represents the slope.
Answer:
The expected aptitude test score for a person whose age is 15 years is 94.
Step-by-step explanation:
Aptitude formula in function of age:
The aptitude A in function of age a is given by:
Find the expected aptitude test score for a person whose age is 15 years.
This is A when a = 15. Thus, finding the numeric value of the function:
Rounding to the nearest whole number, 94.
Yeah I do, what is the square root of 4671?
Answer:
The sample size required is at least 171
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
What sample size is required?
A samle size of at least n is required, in which n is found when
So
Rouding up
The sample size required is at least 171