Answer:
3 1/2 
21/4
Step-by-step explanation:
3 1/2= 7/2= 7 divided by 2=
21/4=21 divided by 4=
![\sqrt[4]{21}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B21%7D)
4 goes into 21, five times which is 5 1/4
![\sqrt[2]{7}](https://tex.z-dn.net/?f=%5Csqrt%5B2%5D%7B7%7D)
2 goes into 7, six times which is 6 1/2
Hope this helps you whith Fractions
<h3>
Answer: 0.93</h3>
Work Shown:
P(A or B) = P(A) + P(B) - P(A and B)
P(A or B) = 0.2 + 0.8 - 0.07
P(A or B) = 0.93
Answer:
x + 2
Step-by-step explanation:
Replace the x with y.
Making is x = y -2
Solve for x=y-2
and you get x+2
Answer:
p(s) = 0,33
Step-by-step explanation:
n = 450
p₀ = 150/450 p₀ = 0,33 then q₀ = 0,67
n*p₀ = 0,33*450 = 150
n*q₀ = 0,67*450 = 301
n*p₀ and n*q₀ more than 10, we can approximate the binomial to a Normal Distribution Distribution
a) p - p₀ = z(c) * √ (p₀q₀)/n
z(c) = ??
CI 95 % then α = 5 % α = 0,05 α/2 = 0,025
z(c) = 1,96
p = p₀ ± z(c) * √ (p₀q₀)/n
p = 0,33 ± 1,96 * 0,022
p = ( 0,33 - 0,04 ; 0,33 + 0,04
p = ( 0,29 ; 0,37 )
The value of the center of the confidence Interval is 0,33
p(s) = 0,33
