Answer:
a) M =82
Step-by-step explanation:
Let´s study this as a Normal distribution.
As we know in a normal distribution the z score is = (X-μ)/(sd/sqrt(n))
where
X = mean for the taken sample = What we want to know in this problem
μ = Total population mean =80
sd= standard deviation= 12
n = sample size=9
So in this case z=( X-80)/(12/sqr(9))= (X-80)/4
also we know that the effect size taken by the machine is 0.5, which is the same as the z-score
so...
0.5 = (X-80)/4 => 0.5*4 = X-80
2+80 = X
X = 82
The answer is
d/5<span>≥7 . . . . . . .. . .. . . .. . .. . . .. . .</span>
Answer:
90b grams.
Step-by-step explanation:
Given that,
Weight of a box = 90 grams
We need to find the weight of b boxes.
For this, we can use unitary method. The weight of one box is given then we can find the weight of many boxes.
i.e.
Weight of b boxes = 90×b
= 90b grams
Hence, the weight of b boxes is 90b grams.
Answer:
Hello,
f(x)=-3x+1, then f^-1(x)= 
have a good day
Step-by-step explanation:
