If there is one-third of a pizza left, and Becky only wants to eat one-half of it, how much of the pizza does she want?
2 answers:
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Answer:
8.54
Step-by-step explanation:
formula:
d= 8.54
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.