Answer:
4x=45
Step-by-step explanation:
Cross multiply to get a simplified equation.
4/5=9/x
4x=45
x=11.25
Answer: 2474
Step-by-step explanation:
Given : A pilot sample of 75 items was taken, and the number of items with the attribute of interest was found to be 30.
Then, prior estimate for proportion of attribute of interest:
Significance level :
Critical value :
Margin of error :
The formula use to find the sample size :_
Now, simplify , we get
Now, the number of items more to sample =
Answer:
Check pdf
Step-by-step explanation:
Length = L
New length = L+0.1L= 1.1 L
Width = W
New width = W - (W/100)p= W-pW/100= (100W-pW)/100=W(100-p)/100
Area =A = LW
New area = A - 0.12A = 0.88A
New area = new width*new length = 1.1L*W(100-p)/100 = 1.1A(100-p)/100
New area = 0.88A
New area = 1.1A(100-p)/100
1.1A(100-p)/100 = 0.88A
1.1(100-p)/100 = 0.88
1.1(100 - p) = 88
100 - p = 80
p = 20
Answer C) 20.
1,615 - 53.60 = 1,516.4
1,516.4 rounded is 1,516.
1,516 is about 96% of 1,615.
100 - 96 = 4
4%