First, find the radius
2
r=circumference
r=18
cm
-------------
2
r=9 cm
Now, we can just use the circle area formula to solve
=
=81
=<span>
254.469 </span>
cm^2
Using confidence interval concepts, it is found that:
a) The point estimate is the sample mean.
b) The confidence interval is:
c) If $1411 is between the bounds of the interval yes, otherwise no.
--------------
- At item a, it asks to provide a point estimate for the population mean, which is the sample mean
--------------
Item b:
- In the spreadsheet, it is possible to find the <em>standard deviation for the sample</em>, thus, the t-distribution is used.
- The confidence interval will be given by:
In which:
- is the sample mean.
- T is the critical value, from the t-distribution, with a two-tailed area of and n-1 degrees of freedom.
- s is the standard deviation for the sample.
- n is the sample size.
--------------
Item c:
We have to check if 1411 is between and .
- If it is, the interval includes the National Average, otherwise, it does not.
A similar problem is given at brainly.com/question/24232455
Answer: $231.5
Step-by-step explanation:
Michael earns 5% of sales as bonus when sales cross $750. In given situation, sales are more than that so he'll get 5% of the sales, so equation becomes:
Earning= Salary + 5% of sales
Earning= 125+ 5% of 2130
Earning= 125+ 2130x5/100
Earning= 125+ 106.5
Earning = $231.5
Answer: No. It may change, and other people who need an exact length will not know what that is, so the number of "yourheights" is useless.
Step-by-step explanation:
Answer:
Lines m and n cannot be parallel
Step-by-step explanation:
1. Because angles 2 and 3 are Same Side Interior Angles, they must be supplementary.
2. To check this you add the angles together (127 + 63) and it sums to 190 degrees, not 180
3. Since they don't agree with the laws of parallel lines, the lines that the angles are on can't be parallel
4. Angles 2 and 3 reside on lines m and n so lines m and n cannot be parallel