Answer:
t= −121
Step-by-step explanation:
Answer:
The correct statements regarding correlation coefficient are:
1. Its absolute value cannot exceed 1.
2. A positive value indicates a strong correlation between the two variables; a negative value indicates a weak correlation between the two variables.
3. If X and Y have positive correlation coefficient, when we run a regression analysis Y=a+bX+e, we will find b positive.
4. If X and Y have positive correlation coefficient, when we run a regression analysis Y=a+bX+e, we will find a positive.
Step-by-step explanation:
Correlation measures the strength of the relationship which exists between X and Y variables. Regression, on the other hand, helps to establish a cause and effect between a dependent variable and an independent variable.
Answer:
$32.50
Step-by-step explanation:
Let x = the cost of 5 pumpkin pies
19.50/3 = x /5 Cross multiply
3x = 97.50
x = $32.50
Answer:6 = 6x -2
Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
The answer is -7
Step-by-step explanation:
I took the test! Hope this helps <3