Answer:
A sample of 179 is needed.
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 = 1.44.
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.
A previous study found that for an average family the variance is 1.69 gallon?
This means that
If they are using a 85% level of confidence, how large of a sample is required to estimate the mean usage of water?
A sample of n is needed, and n is found for M = 0.14. So
Rounding up
A sample of 179 is needed.
the 8 could be tens spot, Hundreds spot, Thousands ... till the end for karens spot
Step-by-step explanation:
Sorry if im wrong.
Since the diameter of the circle is 6 inches, then the radius will be half that, or 3 inches,
Not 100% but all real number so D
Answer:
the answer is 83/13 and its simplification is shown in the picture. 6(5/13)