Answer:
Point estimate for the population variance = 3.92 * .
Step-by-step explanation:
We are given that a sample of 5 strings of thread is randomly selected and the following thicknesses are measured in millimeters ;
X X -
1.13 1.13 - 1.188 = -0.058 3.364 *
1.15 1.15 - 1.188 = -0.038 1.444 *
1.15 1.15 - 1.188 = -0.038 1.444 *
1.24 1.24 - 1.188 = 0.052 2.704 *
1.27 1.27 - 1.188 = 0.082 <u> 6.724 * </u><u> </u>
<u>= 0.01568 </u>
Firstly, Mean of above data, = = = 1.188
Point estimate of Population Variance = Sample variance
= = = 3.92 * .
Therefore, point estimate for the population variance = 3.92 * .
Answer:
9.
10.
Exaplanation:
<em>Please refer to my Answer from this question to know more about the slope of a line: <u>brainly.com/question/24599351</u></em>
In graph 9, we can see a line that is perfectly horizontal. Graphs of lines that are horizontal has a slope of, .
If you want we can still solve for the slope of the line in graph 9, without acknowledging that the line is horizontal.
In graph 9, we can see that the points, and , is on the line. These can be our points and .
In graph 10, we can see that the points, and , is on the line. These can be our points and .
will be the answer.
Step-by-step explanation:-
If the altitude to the hypotenuse of a right-angled triangle bisects the hypotenuse, then we can know that the triangle is <u>Isosceles </u><u>right </u><u>t</u><u>r</u><u>iangle.</u> (AB=AC)
Make AB=AC=2, so,
BC== =
Prime factorizing, we get,
BC =
Take two 2's outside by taking common because of "square" root,
⇢BC =
BD = DC = ,
AD = = =
So, AD=BD=CD= BC
∴⇢
Read more about hypotenuse altitude question;
brainly.com/question/3160811
Answer:
Please see attached picture for full solution.
I believe the answer would be $12,900