Answer:
Step-by-step explanation:

The value of the sample test statistic would be (x−2−√<span><span><span><span><span>29−<span>y<span><span>2</span><span></span></span></span>−10y</span></span><span></span></span>)(x−2+<span>√<span><span><span>29−<span>y<span><span>2</span><span></span></span></span>−10y</span></span><span></span></span></span>)</span><span>
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<h3>
P(call a person not from his neighborhood) = 
</h3>
Step-by-step explanation:
Here, the total number of contacts in the list if Bruce = 25 contacts
The total number of neighbors in the contact = 20 people
Now, let E: Event of calling a person from his neighborhood
So, P(E) = 
So, the probability of calling a person from his neighborhood is 
⇒P(E) =
Now,as we know: P(E) + P(not E) = 1
So, the probability of NOT calling a person from neighborhood
= 1 - probability of calling a person from his neighborhood

⇒P( not E) = 
Hence, P(call a person not from his neighborhood) = 
Y=2x-2
x+2=2x-2
4=x
B. (4,6)