Answer:
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The population proportion have the following distribution
Solution to the problem
We assume for this case a confidence level of 95%. In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by
and
. And the critical value would be given by:

The confidence interval for the mean is given by the following formula:
The margin of error for the proportion interval is given by this formula:
(a)
And if we replace the values obtained we got this:
g(x) is the inverse of f(x)


Answer:
the answers Is c. x=4
Step-by-step explanation:
do substitution 2*4+6=14
and 6*4-10=14
I think 6 1/2,but I could be wrong so take that with a grain of salt
Answer:
Distance = abs(-1700)
Distance = 1700 miles
Step-by-step explanation:
NYC is located East of Los Angels.
The Airplane flies from Los Angeles to the left direction from NYC.
Which is negative direction.
Therefore, distance = -1700
Here the distance cannot be negative even though if it flies in negative direction.
Therefore, we use the absolute value.
The absolute value of a number is always positive.
So, distace = abs( -1700)
Distance = 1700 miles.
Hope this will help you understand the concept.
Thank you.