Answer:
(0.4578 , 0.5318)
Step-by-step explanation:
The attached figure shows the formula for calculating confidence intervals for the difference of proportions in large samples.
Let's call
= proportion of married couples, in the first sample, who had two or more personality preferences in common.
= 197/347 = 0.5677
= size of the first random sample
= proportion of married couples, in the second sample, who had no preferences in common.
= 39/535 = 0.0729
= size of the second random sample = 535
= confidence%.
= 80%
Looking in the normal standard table, we have that = 1.28.
Substituting this values in the formula we have:
Then the confidence interval for p1-p2 is: (0.4578 , 0.5318)
Answer: 86 and 4
Step-by-step explanation:
Hopefully this is the right answer!
Answer:
Area of Trapezoid is 88 Units^2
Step-by-step explanation:
Area of trapezoid = (a+b)/2 * h
where a and b are lengths of each base and h is the height of trapezoid.
In the question given:
a= 17 (because a is the upper base and value will be 17)
b= 27 (because b is the lower base and value will be 17+5+5 = 27)
h= 4
Area of trapezoid = (a+b)/2 * h
= (17 +27)/ 2 * 4
= 22 * 4
= 88 Units^2
Area of Trapezoid is 88 Units^2
80 percent...... Ratios are the same as fractions so its just like 4/5
greatest to least: 6.32, 6, 4.27, 4, 3.5 .
I got 4.27 by multiplying 4 x 11, adding three which makes it 47 and then divided it by 11