Answer:
True
Step-by-step explanation:
Answer:
The null hypothesis
The alternative hypothesis
Step-by-step explanation:
From the question we are told that
The mean is
The standard deviation is
The sample size is n = 25
The sample mean is
Generally
The null hypothesis is : That the mean of the Arsenic blood concentrations in healthy individuals is
i.e
The null hypothesis
The alternative hypothesis is : That the mean of the Arsenic blood concentrations in healthy individuals is greater than
The alternative hypothesis
So we start off by subtracting 137.3 from 180 getting 42.5. If you add the ratios up (3+4) you get 7 and 7 should equal 42.5. thus,
42.5/7= 85/14
(85/14)*3=18.2 or (255/14 to be exact)
(85/14)*4= 24.29 or (170/7 to be exact)
if its diameter is 9, that means its radius is half that, or 4.5.
The factored form of this quadratic would be : (2x - 5)(x + 3) you can use the foil method to multiply the binomials to verify.