Answer:
Step-by-step explanation:
For this case we can calculate all the questions with the following table:
Class Midpoint(Xi) fi Xi*fi Xi^2 *fi
____________________________________
0-3 1.5 6 9 13.5
3-6 4.5 6 27 121.5
6-9 7.5 11 82.5 618.75
9-12 10.5 21 220.5 2315.25
12-25 18.5 5 18 1711.25
_____________________________________
Total 49 431.5 4780.25
We can calculate the expected value with the following formula:
And if we replace we got:
We can calculate the sample variance with the following formula:
And replacing we got:
And the deviation would be just the square root of the variance like this:
Answer:
________________________________
Associative property of addition: Changing grouping of addends doesn't change the sum.
Distributive property: Multiplying a sum by a number is the same as multiplying each addend by that number and then adding the two products.
Associative property of multiplication: Changing grouping of the factors doesn't change the products.
Commutative property of multiplication: Changing order of the factors doesn't change the products.
Commutative property of addition: Changing order of addends doesn't change the sum.
Answer:
16
x
2
−
48
x
+
36
Step-by-step explanation:
16 x squared
Do you need work?
Each batch contains 16 muffins.
112/7=16
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<u>Given</u>:
Given that an aquarium is being filled with water.
The given graph shows the height of the water over time as the aquarium is being filled.
We need to determine the slope of the graph.
<u>Slope</u>:
The slope of the given graph can be determined using the formula,
Since, the slope is same for all the points on the straight line, then let us consider the points (2,5) and (4,10)
Substituting these points in the above formula, we get;
Simplifying, we get;
Thus, the slope of the given graph is 2.5