a senator wishes to estimate the proportion of united states voters who favor new road construction. what size sample should be
1 answer:
The size of the sample should be obtained at 2401 in order to be 95% confident
Given that:
Margi of error,
Population proportion,
To Find: The size of the sample that should be obtained in order to be 95% confident
Let the size of the sample be n
Using formula,
Therefore, the size of the sample should be obtained at 2401 in order to be 95% confident
Learn more about Population proportion here brainly.com/question/15703406
#SPJ4
You might be interested in
The values are vx = , vw =
and m∠x = 45°, for the given right angle diagram.
Step-by-step explanation:
The given is,
Right angled triangle XVW,
XW = 14
m∠V = 90°
m∠W = 45°
Step:1
Given diagram is right angle triangle,
Trigonometric ratios for right angle is,
∅
............................(1)
∅
.........................(2)
∅
..........................(3)
Step:2
For the value of VX,
∅
From given,
∅ = 45°
XW = 14
Above equation becomes,
45
Where, Sin 45 = ,
Step:3
For the value of VW,
∅
From given,
∅ = 45°
XW = 14
Above equation becomes,
45
Where, cos 45 = ,
Step:4
For the value m∠x = a,
a
From given,
VX =
VW =
Above equation becomes,
a
a = 1
a = (1)
a = 45°
m∠x = a = 45°
Step:5
Check for solution,
m∠v = m∠w + m∠x
= 45° + 45°
90° = 90°
Result:
The values are vx = , vw =
and m∠x = 45°, for the given right angle diagram.