Answer:
(a). ( 0.776 ,0.809).
(b). (0.567 , 0.613).
(c). 0.600.
Step-by-step explanation:
Okay, we are given the following set of values or data or parameters;
=> "A survey of 2255 randomly selected US adults (age 18 or older)"
=> "1787 of them use the Internet regularly. Of the Internet users, 1054 use a social networking site".
=> Also, "95% confidence interval for each of the following proportions"
Therefore, we are going to make use of one (major ) mathematical formula in solving this particular Question and it is given below;
Confidence Interval = p +/- z* × [ √p( 1 - p) / n].
(a).
Where p = 1787/2255 = 0.793.
95% confidence Interval = z* = 1.96.
= 0.793 +/- 1.96 × [√0.793 ( 1 - 0.793)/ 2255] .
= 0.793 +/- 0.0167.
= ( 0.776 ,0.809).
(b). Where p = 1054/ 1787 = 0.5900
95% confidence Interval = z* = 1.96.
= 0.5900 +/- 1.96 × [√0.5900 ( 1 - 0.5900)/ 1787]
= 0.5900 +/- 0.0228.
= (0.567 , 0.613).
(c). 1054/1787 = 0.59 = 0.600.
12 inches are in one foot so it would be,
12x12=144
Answer: 144 inches
hope i helped
Answer:
5b
Step-by-step explanation:
Product means to multiply, 5 and a number being multiplied would create the expression 5b
Answer:
equation: y = -4x + 7
slope: -4
y-intercept: 7
Step-by-step explanation:
in order to make this equation into slope-intercept form, you have to isolate the y
to do that, you can subtract the 4x on both sides, which will leave y by itself
4x + y = 7
-4x -4x
y = -4x + 7
the slope is -4
and the y-intercept is 7
The correct answer is 55 degrees as it is a property that if two same points have two angles one from the centre and other somewhere on the edge then it gets half.
