What is 66.98 rounded to the nearest tenth
2 answers:
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Answer:
$325
Step-by-step explanation
78% is 234
x is 100%
cross multiply
=
234 × 100 = 72x
23400 = 72x
23400÷72 =72x ÷72
325 = x
Answer:
Margin of error of 0.0485 hours.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
That is z with a pvalue of , so Z = 1.96.
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
In this question:
The margin of error is of:
Margin of error of 0.0485 hours.