60 because all of the sides are equal
Answer:
a. [ 0.454,0.51]
b. 599.472 ~ 600
Step-by-step explanation:
a)
Confidence Interval For Proportion
CI = p ± Z a/2 Sqrt(p*(1-p)/n)))
x = Mean
n = Sample Size
a = 1 - (Confidence Level/100)
Za/2 = Z-table value
CI = Confidence Interval
Mean(x)=410
Sample Size(n)=850
Sample proportion = x/n =0.482
Confidence Interval = [ 0.482 ±Z a/2 ( Sqrt ( 0.482*0.518) /850)]
= [ 0.482 - 1.645* Sqrt(0) , 0.482 + 1.65* Sqrt(0) ]
= [ 0.454,0.51]
b)
Compute Sample Size ( n ) = n=(Z/E)^2*p*(1-p)
Z a/2 at 0.05 is = 1.96
Samle Proportion = 0.482
ME = 0.04
n = ( 1.96 / 0.04 )^2 * 0.482*0.518
= 599.472 ~ 600
Answer:the first one is 6 and the seconndone is 4.5
Step-by-step explanation:
x- gose forward 2
y- gose 2.5
X-45+10=15
X-35=15
+35 +35
X=50
He had 50 dvds to begin with.
Answer:
(4)The lowest common denominator of 3 and 8 is 24.
(5) The lowest common denominator of 5 and 10 is 10.
(6) The lowest common denominator of 7 and 3 is 21.
(7) The lowest common denominator of 4 and 5 is 20.
(8) The lowest common denominator of 2 and 12 is 12.
(9) The lowest common denominator of 15 and 5 is 15.
Hope this helped! :)
