Answer:
x^2 = a/b (option a)
Step-by-step explanation:
If we have square root at the top and bottom then we take single square root with fraction inside
To remove square root we take square on both sides because square and square root will get cancelled
x^2 = a/b is true
Answer:
the answer i got was £46,000
Step-by-step explanation:
how i got this answer was that i multiplied £2300 • 5 and got £11,500 then i multiplied £11,500 • 4 and got £46,000
i hope this helps you.
Answer:
As the sample size increases the standard deviation of the sample decreases and hence the variability of the sample decreases.
Hence the second option is the correct option.
Step-by-step explanation:
i) let the standard deviation of the population be given by σ.
ii) for sample taken from among the population of size n the standard deviation of the sample becomes
and so we can see that for the sample the standard deviation of the sample is less than the standard deviation of the sample.
iii) As the sample size increases we can say that the standard deviation of the sample decreases.
iv) the variance , or variability, of a sample is equal to the square of the standard deviation of the sample.
therefore as the sample size increases the standard deviation of the sample decreases and hence the variability of the sample decreases.
Answer:
-x+1027 is the answer of this problem