Answer:
x = 20
Step-by-step explanation:
Assuming that both 6x and 120 are equal to each other, you can use simple algebra to find out what x is
6x = 120 (divide both sides by 6 to isolate x)
x = 20
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
30 tens + 2 ones = 32
Hope I helped :P
Answer:
It decreases by 4 units
Step-by-step explanation:
X(30;0)
y(0;50)
substitue 0 for y and solve for x
substitute 0 in for x and solve for y
