Answer:
y=1x-9 That's the equation if you're trying to figure that out and the slope would be 1/1
You are correct. The higher the standard deviation is, the more spread out the data set will be. Nice work.
Answer:
The data item is 
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean 
and standard deviation 
, the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean of 400 and a standard deviation of 60.
This means that 
z=3
We have to find X when Z = 3. So
The data item is
Explaining? Simple!
1. In order to find the answer you simply change 25% to decimal form then multiply by your brushes. Then subtract your value from the original:
25% ⇒ .25 [Note: All percentages are less than one]
[840 x .25] = 210
[840 - 210] = 630.
840 decreased by 25% is 630.
2. For this one, you do the exact same thing as the first one, except you add since it is being increased. So convert 7% to decimal form and then multiply it by your money. The add this value to the original:
7% ⇒ .07 [*Note*: This is 7% not 70%]
[84 x .07] = 5.88
[84 + 5.88] = $89.88. (Don't forget to add your symbols!).
$84 increased by 7% is $89.88!
