Answer:
The value of the test statistic is
Step-by-step explanation:
Central Limit Theorem
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean and standard deviation
Our test statistic is:
In which X is the sample mean, is the expected mean, is the standard deviation and n is the size of the sample.
A publisher reports that 52% of their readers own a laptop.
This means that
Sample of 180:
Means that
By the Central Limit Theorem:
A random sample of 180 found that 46% of the readers owned a laptop.
This means that
Find the value of the test statistic.
The value of the test statistic is
Answer:
<h2>y = 8</h2>
Step-by-step explanation:
4 = y - 4
Group the constants at the left side of the equation
That's
4 + 4 = y
Add the constants
<h3>y = 8</h3>
Hope this helps you
Answer:
<h3>Q1</h3>
Angles forming a linear pair are supplementary and sum to 180°
- x + 8x = 180°
- 9x = 180°
- x = 20°
The smaller angle is 20°
<h3>Q2</h3>
A(-2, 10) reflected over x-axis
<u>Rule for such a reflection is:</u>
<u>Point A will map to:</u>
Correct option is D
<h3>Q3</h3>
One point is at the origin and two other points are at the distance m horizontally and vertically from the origin
<u>The last point will have same distance m from the point (m, 0) and (0, m) and this will be point:</u>
Answer:
what do I need to do to answer
Step-by-step explanation:
Answer:
y=14
Step-by-step explanation:
We are told that the legs of the isosceles trapezoid are AB and CD
AB = 7y - 4
CD = 8y - 18
In any isosceles trapezoid, the two legs are of equal length.
Therefore, AB = CD
⇒ 7y - 4 = 8y - 18
Add 18 to both sides of the equation
7y - 4 + 18 = 8y - 18 + 18
7y + 14 = 8y