Answer:
The 85% confidence interval for the population proportion that claim to always buckle up is (0.7877, 0.8441).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
They randomly survey 391 drivers and find that 319 claim to always buckle up.
This means that 
85% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 85% confidence interval for the population proportion that claim to always buckle up is (0.7877, 0.8441).
the men can be arranges in 5! ways
and the women in 5! ways
so (5*4*3*2) = 120
120 *120 = 14,400 ways
X - 1 is not null => x is not 1 => D = R - {1};
Hey!!
here is your answer >>>
The interior angle A measures 77°
The exterior angle measures 130°
The sum of angles A and B is 130°
Yes, it's true, this a property of the triangle, the last question is 'true'
Hope my answer helps!
12.5% 80-70=10 then divide 10\80 to get .125 , then multiply by 100 to get 12.5%
