x + 6y = 12
You want the y-value to be on one side of the equation, so you have to subtract the x-value from both sides.
6y = -x + 12
Next, you divide both sides by 6, so that the y-value will be by itself.
y = - + 2
We know that the slope or the 'm' value is located before the x-value based on y = mx +b, therefore the slope is -
Solution
Question 1:
- The formula for finding the mean score is that of the expected value formula. That is,
- Thus, the mean can be gotten as follows:
The mean score is 7.43
Question 2:
- The more students write the exam, the more the mean score will approach the theoretical mean score.
- The theoretical mean score is calculated above to be 7.43
- Thus, as more students write the quiz, their scores approach 7.43