Answer:

Step-by-step explanation:
Assuming conditions are met, the formula for a confidence interval (CI) for the difference between two population proportions is
where
and
are the sample proportion and sample size of the first sample, and
and
are the sample proportion and sample size of the second sample.
We see that
and
. We also know that a 98% confidence level corresponds to a critical value of
, so we can plug these values into the formula to get our desired confidence interval:

Hence, we are 98% confident that the true difference in the proportion of people that live in a city who identify as a democrat and the proportion of people that live in a rural area who identify as a democrat is contained within the interval {-0.2941,-0.0337}
The 98% confidence interval also suggests that it may be more likely that identified democrats in a rural area have a greater proportion than identified democrats in a city since the differences in the interval are less than 0.
Hello there, and thank you for posting your question here on brainly.
<em>Short answer: 25.48 x 10^4
</em>
Why?
This equation has a few steps. Simplify the brackets. (2.8 x 10^-2)*(9.1 x 10^6) --> 2.8 x 10^-2 * 9.1 x 10^6 Simplify. (or multiply the two decimals) 2.8 x 10^-2 * 9.1 x 10^6 --> 25.48 x 10^-2 x 10^6 Use the <em>product rule. </em>(the formula is x^y x^z = x^ y+z) 25.48 x 10^-2 x 10^6 --> 25.48 x 10^4
Hope this helped you! ♥
Answer:
simplified: 3x^2+7x+5y-4
Step-by-step explanation:
all you gotta do is you add -5x and 12x
The probability of spinning an A on the first spinner is 1/4 = 0.25
Since there is 1 outcome we want (landing on A) out of 4 total outcomes (A,B,C,D)
Similarly, the probability of landing on Z is 1/5 = 0.20
There is 1 outcome we want (Z) out of five total (V,W,X,Y,Z)
Multiply the two probability values. This multiplication is only possible because the two events are independent. This is an important condition.
So multiplying the values gets us 0.25*0.20 = 0.05 = 5%
Answer: 5%
Side Note: 1/20 = 0.05 = 5%
3m x 1.5m x 2m = 9 m^3 (cubic meters).
Hope this helps!! ~LENA~