One researcher wishes to estimate the mean number of hours that high school students spend watching tv on a weekday. a margin of
2 answers:
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First of all, we can observe that
So the expression becomes
This means that the expression is defined for every
Now, since the denominator is always positive (when it exists), the fraction can only be positive if the denominator is also positive: we must ask
Since we can't accept 3 as an answer, the actual solution set is
Answer:
Step-by-step explanation:
Given expression,
=>
We see that is common in both numerator and denominator
hence canceling out we get:-
Answer=