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
The difference in the widths, in meters, of the human hair and the piece of sand is m.
It is given in the question that:-
Width of a human hair = m
Width of a piece of sand = m
We have to find the difference in the widths, in meters, of the human hair and the piece of sand.
We know that,
Difference between the widths = Width of a piece of sand - Width of a human hair
Hence, we can write,
Difference between the widths = m -
m
We can write,
Hence,
Difference between the widths =
m
To learn more about Width, here:-
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