Answer:
mean (average) is 17.6
mean absolute deviation is 15.2
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<em>Step-by-step explanation:</em>
to find <em>mean</em>, u add up all your numbers and divide by how many there are...
to find <em>mean absolute deviation</em> you find the mean of the data and subtract that amount to each of your data pieces...
then u find absolute value of each of them (to make them all positive)
then u add all of those numbers up and divide by how many there are, and that is your answer!!
<em>Hope this helps u in the future!!</em>
Answer:
yes
Step-by-step explanation:
There are several ways to go at this.
My first choice is to use a graphing calculator. It shows the function has a zero at x=5, so x-5 is a factor.
Another good choice is to use synthetic division (2nd attachment). If the remainder is zero, then x-5 is a factor. It is and it is.
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You can also evaluate the function at x=5. The remainder theorem tells you that if the value is zero, then x-5 is a factor. Evaluating the polynomial written in Horner form is a lot like synthetic division.
(((x -4)x -15)x +58)x -40 for x=5 is ... (-10·5 +58)5 -40 = 40-40 = 0
The value of h(5) is zero, so x-5 is a factor of h(x).
Answer:
y-b/x = a
Step-by-step explanation:
y-b/x = a
Answer:(4,7/2)
Step-by-step explanation:
Answer:
We reject H₀. We accept Hₐ (the cream can improve the the skin of more than 50%
Step-by-step explanation:
We have a proportion one tail test (right)
P₀ = 50 % = 0,5
P = 44/53 = 0.831
sample size = n = 53
Confidence interval = 0,95 α = 0.05 then z(c) = 1.64
1.-Hypothesis
H₀ null hypothesis P₀ = 0.5
Hₐ alternative hypothesis P₀ > 0.5
2.-Compute z(s)
z(s) = ( P - P₀ ) / √P₀Q₀/n ⇒ z(s) = (0.831 - 0.5 )/√0.5*0.5/53
z(s) = 0.3301/0.06
z(s) = 5.5
3.-Compare z(c) and z(s)
z(s) > z(c) 5.5 > 1.64
therefore z(s) is in the rejection region we reject H₀ . And accept Hₐ
