Using z-scores, it is found that the unusual values are those that are less than 124.
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The z-score of a measure X in a data-set with mean 
and standard deviation 
is given by:
- The z-score measures how many standard deviations X is from the mean.
- Measures that are<u> more than 2 standard deviations from the mean</u> are unusual.
- Z < -2 means that the measure X is unusually low.
- Z > 2 means that the measure X is unusually high.
In this problem:
- Mean of 150, thus
. - Standard deviation of 13, thus
.
Unusual values are those that are less than 124.
A similar problem is given at brainly.com/question/15315313
Hey mate!
You stuck?
It shows the expression of the sum of the total miles per hour the car traveled.
Hope this helps! :)
9514 1404 393
Answer:
arc AC = 63°
Step-by-step explanation:
Arc BC is twice the measure of inscribed angle BAC, so is ...
arc AC = 2×89° = 178°
The remaining arc of the circle is the difference between 360° and the sum of the other two.
arc AC = 360° -119° -178°
arc AC = 63°
Answer:
6554
Step-by-step explanation:
The sequence 2, -8, 32, -128 has a first term (a1) of 2 and a common ratio (r) of -8/2 = -4. The sum of n terms is given by ...
Sn = a1·(r^n -1)/(r -1)
For your sequence, the sum of 7 terms is ...
S7 = 2·((-4)^7 -1)/(-4-1) = 2(-16384/-5) = 6554
The sum of changes after the 7th day is 6554.
