x = number of miles you walk
5*x = amount of money the cousin donates
25 = amount of money your friend donates
5x+25 = total amount of money donated
y = total amount of money donated
y = 5x+25
Answer: y = 5x+25
Answer:
21+3x
Step-by-step explanation:
3(7+x)
3*7+3*X
21+3x
Answer:24,173.856
Step-by-step explanation: you calculate the average of the last 3 years then find 1.8% of that number and then multiple by 28 years to find his total pension
Answer:
closed circle on -9 and shaded to the right
Step-by-step explanation:
Since it has "≥", the circle would be closed.
Now, it states that "x is greater than or equal to -9"
So that means x would be positive and would start at -9.
Since x is unknown, the line would extend to the right side(positive side).
Answer:
(a): Marginal pmf of x
(b): Marginal pmf of y
(c): Mean and Variance of x
(d): Mean and Variance of y
(e): The covariance and the coefficient of correlation
Step-by-step explanation:
Given
<em>x = bottles</em>
<em>y = carton</em>
<em>See attachment for complete question</em>
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Solving (a): Marginal pmf of x
This is calculated as:
So:
Solving (b): Marginal pmf of y
This is calculated as:
So:
Solving (c): Mean and Variance of x
Mean is calculated as:
So, we have:
Variance is calculated as:
Calculate
So:
Solving (d): Mean and Variance of y
Mean is calculated as:
So, we have:
Variance is calculated as:
Calculate
So:
Solving (e): The covariance and the coefficient of correlation
Covariance is calculated as:
Calculate E(xy)
This gives:
So:
The coefficient of correlation is then calculated as:
--- approximated