A) If you only sample people in a sports supply store, your sample will be biased. People in a sports supply store are more likely to be people that belong to a gym.
B) While it does not have necessarily the same amount of bias as sampling people in the sports supply store, people that go to a park are generally more likely to be people that exercise or have a gym membership.
C) Taking a random sample of people in town is a good way to get a non-biased sample. They are not necessarily predisposed to answer your question one way or another.
D) For the same reason as choice A, this is a biased sample.
C is the best choice.
The Answer to the question is B
Answer:
11/12
Step-by-step explanation:
121 /132
Divide the top and bottom by 11
121/11 =11
132/11 =12
121/132 =11/12
Answer:
.01%*
Step-by-step explanation:
Individually, they both have a rate of failure of 1%.
.01 x .01 = .0001
Therefore they have a combined probability of failure of .01%
*Disclaimer!!
I am not the best at this area in math so I would still reference against someone else's answer, but this is my best effort :)
-78
Step-by-step explanation:
(7-8)(78)
(-1)(78)=-78
