Replace the letters with their value:
4^3 = 4 x 4 x 4 = 16 x 4 = 64
The answer is 64
Answer:
Step-by-step explanation:
a)
Number of sample, n = 100
p = 0.78
q = 1 - p = 1 - 0.78
q = 0.22
For a confidence level of 90%, the corresponding z value is 1.645.
The formula for determining the error bound for the proportion is
z × √pq/n
= 1.645 ×√(0.78 × 0.22)/100
= 1.645 × 0.0414 = 0.068
The upper boundary of the population proportion is
0.78 + 0.068 = 0.85
The lower boundary of the population proportion is
0.78 - 0.068 = 0.71
b) For a confidence level of 95%, the corresponding z value is 1.96.
Therefore,
= 1.96 ×√(0.78 × 0.22)/100
= 1.96 × 0.0414 = 0.081
The upper boundary of the population proportion is
0.78 + 0.081 = 0.86
The lower boundary of the population proportion is
0.78 - 0.081 = 0.7
<span>3x + x + 5 – 2x =
= 3x + x - 2x + 5
= 2x + 5
</span>
To use algebraic methods to solve geometric problems.
Answer:
1)x=3
2)t=-4
Step-by-step explanation:
x-9=-12
x=3
2t=-8
t=-4
