Answer:
The null hypothesis is
Alternate hypothesis is
Step-by-step explanation:
Consider the provided information.
A study found that, in 2005, 12.5% of U.S. workers belonged to unions.
Suppose a sample of 400 U.S. workers is collected in 2006 to determine whether union efforts to organize have increased union membership.
Here we just need to formulate the hypotheses.
It is given that:
n=400 and 12.5% of U.S. workers belonged to unions.
12.5% can be written as:
12.5/100=0.125
The Null hypothesis: The workers belonging to unions ≤ 0.125
Alternate hypothesis: The workers belonging to unions is > 0.125
This can be written as:
So, the null hypothesis is
Alternate hypothesis is
RT + tw = wx + tw is the right answer
(x – h)² + (y – k)²<span> = r</span>²
Fill in the numbers
(x – 7)²<span> + (y +3)</span>²<span> = 49</span>
Answer:
189 people
Step-by-step explanation:
We can make a proportion to solve
We know that 7 out of 8 people prefer Brand X, and p out of 216 people prefer Brand X, so
7/8=p/216
To solve, we need to get p by itself.
To do this, we must multiply both sides by 216 to "reverse" the division being done to p.
216(7/8)=(p/216)216
189=p
So, out of 216 people, 189 people will prefer Brand X.