Answer:
<u>The correct answer is z = 1.2</u>
Step-by-step explanation:
μ or average income = US$ 3,000
σ or standard deviation = US$ 250
Income in a given month = US$ 3,300
For calculating the z score, we use the following formula:
z = (x – μ) / σ
z = (3,300 – 3,000 / 250)
z = 300/250
z = 6/5 = 1.2
Interpreting z
A Z score tells us how many units of standard deviation (1.2 in this case)from the average a given score is, that is, we do not count in quantity of points, but in quantities of standard deviations. To use the Z score we require the distribution to be normal and to know the average and standard deviation of the scores.
Finding perimeter is simple. All you do is add up all of the side lengths, and bada bing bada boom, you got the perimeter.
Circumference =
We know that the circumference in here is equal to 23000 miles.
23000 = pi x d
pi will be approximated to 3.14
23000 = 3.14d
divide both sides by 3.14 to get
about 7325 as the diameter
Answer:
yes
Step-by-step explanation:
The sequence is changing the number -8 is multiplied by by 1 less than the previous number.
The next sequence would be -8 x -1 = 8
The answer would be D.
