18. A professor gives his class an assignment that is worth 15 points. The next day he tells his students that the mean score on the assignment was M = 11 with a standard deviation of s = 17. It should be obvious that the instructor made a mistake in his calculations. Explain why. S%3=

Q: 18 43

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Q: (369) 34 / 3 * 9 +12 / 4 * 5

A: Given,             369343*9+124*5

Q: 1.147

A: Since you have asked multiple questions in a single request so we will be answering only first…

Q: 9) 60

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Q: 13 dと 2) xp 7-x2

A: Here we have to find the integral value.

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A: Approach to solving the question: Missing information Detailed explanation: Examples: Key…

Q: 8.91x1.26

A: Answer of this multiplication is 11.2266

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Q: 1,046 +523

A: Rational Numbers: All the numbers which can be written in the form of pq. Here, p and q are integers…