It shows you the exact distance from each number and it's easier to find out how far apart they are.
4+P and in subtaction will be P - 4... because in subtraction the letter always goes first and the number next.
The confidence interval is
.
This means that if we take repeated samples, 99% of the intervals would contain the population proportion.
To construct this interval, we use
,
where
Since 590/1016 said they had a cat and a dog, p=0.581 and N=1016:
We need the z-score associated with this confidence level:
Convert 99% to a decimal: 99/100 = 0.99
Subtract from 1: 1-0.95 = 0.01
Divide by 2: 0.01/2 = 0.005
Subtract from 1: 1-0.005 = 0.995
Using a z-table, we see that this value is equally distant from z=2.57 and z=2.58, so we will use z=2.575:
Answer:
3
Step-by-step explanation:
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<u>Given Question</u>
For the expression , evaluate it for .
From the evaluated set of values the mean absolute deviation rounded off to the nearest tenth is:
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Evaluating the expression for the given values of x:
<u></u>
Evaluated set of values: -5, -3, -1, 1, 3, 5
To find the Mean Absolute Deviation (MAD):
- Calculate the mean (by summing the data values and dividing by the number of values)
- Subtract the mean from each value in the data set and take the absolute value of each result.
- Sum the absolute values from step 2.
- Divide by the number of values.
<u></u>
Absolute values:
Sum of absolute values = 18