Pi equals 3.14159265...and so on
Y=-7/2x+1/2
i already typed the work out but something went wrong?
1. find slope
2. plug in slope to slope intercept form equation
3. plug in a point to find b
4. plug in slope, b to get equation
Answer:
1. 10%
2. 49.1%
Step-by-step explanation:
1. The percent of voters who are other is the number of other divided by the total number of voters.
The number of "other" votes is 222. The number of total votes is 2,222.
The percent is 222/2222 = 0.0999. Times the decimal by 100 for the percent.
0.0999*100 = 9.99% rounds to 10%.
2. The probability is found by finding the number of male and registered as democrat, which is 600, and dividing it by the number of males, which is 1,222.
600/1,222 = 0.4909
Multiply by the decimal by 100 to find the percent.
0.4909*100 = 49.09 which rounds to 49.1%.
Answer:
Step-by-step explanation:
Given that sample size is 130 >30. Also by central limit theorem, we know that mean (here proportion) of all means of different samples would tend to become normal with mean = average of all means(here proportions)
Hence we can assume normality assumptions here.
Proportion sample given = 92/130 = 0.7077
The mean proportion of different samples for large sample size will follow normal with mean = sample proportion and std error = square root of p(1-p)/n
Hence mean proportion p= 0.7077
q = 1-p =0.2923
Std error = 0.0399
For 95% confidence interval we find that z critical for 95% two tailed is 1,.96
Hence margin of error = + or - 1.96(std error)
= 0.0782
Confidence interval = (p-margin of error, p+margin of error)
= (0.7077-0.0782,0.7077+0.0782)
=(0.6295, 0.7859)
We are 95% confident that average of sample proportions of different samples would lie within these values in the interval for large sample sizes.
