Answer:
The sample must be of at least 48 pizzas.
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 the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
How large a sample must she take if she wants the margin of error to be under 0.5 inch?
She needs a sample of at least n, in which is found when
Rounding up
The sample must be of at least 48 pizzas.
I hope this helps you
P=r+c
c=P-r
Answer:
x>9/5
Step-by-step explanation:
I hope this helps you
Answer:
Cancel out the on both sides.
Now, you divide both sides by -6!
There you go! Hope that helped! :)
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Answer:
what am I simplifying exactly