The correct answer is: Option (A) The new standard deviation is greater than $27.
Explanation:
The given sample set is the following:
75, 82, 100, 120, 140.
To find the new standard deviation, add the sixth skateboard to the above sample set, as follows:
75, 82, 100, 120, 140, 450.
Now we have 6 elements in the sample set.
<u>Step-1:</u> Find the <em>mean</em> of the new sample set.
Where, n is the total number of elements in the sample set. In this case, n=6.
<u>Step-2:</u> Find the <em>variance ()</em>.
<u>Step-3:</u> Find the new standard deviation.
Standard deviation is the square-root of variance.
New standard deviation ($143.53) is greater than the standard deviation ($27) without the sixth skateboard sample in sample set.
<u>Conclusion:</u> The Option (A) The new standard deviation is greater than $27 is the right answer.
Answer:
Step-by-step explanation:
1) D is your answer.
Isolate the y:
2x = 3y - 5
first add 5 from both sides
2x (+5) = 3y - 5 (+5)
Next, divide 3 from both sides to isolate the y
(2x + 5)/3 = (3y)/3
y = (2x + 5)/3
2) None of the above is your answer
Plug in points for each equation. None of them work for more than 1 or 2 points. (they are not true for all points) ∴ None of the above is your answer
hope this helps
Answer:
D
Step-by-step explanation:
D says four-tenths and 2 times 2 is 4 and 5 times 2 is 10 so 2/5 is equal to 4/10.
Answer:
4/5 24/30
Step-by-step explanation: