Answer:
51/56
Step-by-step explanation:
Keep/Change/Flip
keepthe first fraction the same
change the division sign into a multiplication sign
flip the seond fraction upside down (in this case it would become 3/2)
Answer:
Part a) Is a positive correlation
Part b)
Part c) see the explanation
Step-by-step explanation:
Let
x ----> the number of items sold
y ----> the money spent on advertising
Part a) How would you characterize the relationship between money spent on advertising and items sold?
we know that
Positive correlation is a relationship between two variables in which both variables move in the same direction
so
As the value of x increases, the value of y increases
therefore
Is a positive correlation
Part b) Sally uses the function y = 1.6x + 21.5 to model the situation. What score does the model predict should be spent in advertising to sell 30 items?
we have
For x=30 items
substitute the value of x in the linear equation and solve for y
Part c) What does the number 21.5 in Part (b) mean in the context of the situation?
we have
This is a linear equation in slope intercept form
where
The slope is
The y-intercept or initial value is
therefore
In the context of the situation the number 21.5 means the initial amount spent at the begin (when the number of items sold was zero)
Answer:
Add than multiply
Step-by-step explanation:
Step-by-step explanation:
1. P(light OR domestic) = P(light) + P(domestic) − P(light AND domestic)
P(light OR domestic) = 0.62 + 0.70 − 0.55
P(light OR domestic) = 0.77
2. P(light AND not domestic) = P(light) − P(light AND domestic)
P(light AND not domestic) = 0.62 − 0.55
P(light AND not domestic) = 0.07
3. P(light GIVEN not domestic) = P(light AND not domestic) / P(not domestic)
P(light GIVEN not domestic) = 0.07 / (1 − 0.70)
P(light GIVEN not domestic) = 0.233
4. Two events are independent if P(A) × P(B) = P(A and B).
P(light) × P(domestic) = 0.62 × 0.70 = 0.434
P(light AND domestic) = 0.55
Therefore, the type and location are not independent.