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1 answer:
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Answer:
The best estimate is 90.
Step-by-step explanation:
Given : Quotient 5,397 divided by 62 .
To find : The best estimate of the given situation.
Solution : We solve this by approximating the term and then divide to get solution.
Approximation is rounding off the number
→ When the ones digit is greater than 5 (5, 6, 7, 8, or 9) then it round the number up.
→ When the ones digit is less than 5 ( 0, 1, 2, 3, or 4) then it round the number down.
Approximation of 5397 to hundredth is 5400
Approximation of 62 to tenth is 60
Now, divide 5400 by 60
Therefore, The best estimate is 90.
We can also cross check by actual division of 5397 by 62.
When we approximate 87.04 it round off to 90.
Answer:
(0.3798, 0.4602)
Step-by-step explanation:
Let p be the true proportion of US adults who believe raising the minimum wage will help the economy. A point estimate for p is and a good aproximation (because we have a large sample) for the standard deviation of
is
. Therefore, a 99% confidence interval for p is given by
where
and
is the
th quantile of the standard normal distribution, so we have,
, i.e.,
or equivalently (0.3798, 0.4602).