Answer:
50%
Explanation:
Given: Selling price= $120 per unit.
Variable cost= $60 per unit.
First computing contribution margin.
Contribution margin= 
⇒ Contribution margin= 
∴ Contribution margin= 
Now, calculating the contribution margin ratio.
Contribution margin ratio= 
⇒ Contribution margin ratio= 
∴ Contribution margin ratio= 
Hence, the product´s contribution ratio is 50%.
Answer:
C. Fixed Interval
Explanation:
"Fixed Interval" is a type of <em>Reinforcement Schedule. </em>The "reward" in the situation above is the<em> salary given to the employees</em> during Wednesdays. As noticed, their productivity increases over the week, with the peak on Wednesday.
The<u> "peak" of productivity</u> is the<u> exhibited behavior during pay day.</u> They try to work hard in order to receive a salary. <em>They become more inspired to work during the salary day.</em> It is followed by<em> </em><em>less productivity on Thursdays</em><em> </em>because they have already been rewarded.
Such reinforcement schedule is called the "fixed interval." This also means that their productivity will not increase if they will not be paid.
So, this explains the answer.
Answer:
D, should be investigated because an assignable cause of variation might be present.
Explanation:
An R-chart is a control chart that is used to observe the variability of a process when measuring or analyzing a small subgroup of the process. The R-chart has a control limit and the position of a process variability has its own effect on the process.
In a R-chart, the center line of each subgroup analyzed is usually the expected value of the range of the process.
When the process variability is below the center line, the process should be investigated as there might be a cause of variation being below the center line.
Cheers.
