Marco ate pizza for dinner last night he had 7/12 of the pizza left over. His brothers woke up this morning and ate 2/3 of what
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Answer:
The confidence interval at 95 % for which we assume that it contains the true value is (0.0962, 0.1838).
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 .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the mean subtracted by M. So it is 0.14 - 0.0438 = 0.0962
The upper end of the interval is the mean added to M. So it is 0.14 + 0.0438 = 0.1838
The confidence interval at 95 % for which we assume that it contains the true value is (0.0962, 0.1838).