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25.01.2021 •
Mathematics
Inches Yards 252 ? 288 00 Which of the following is the missing value in the table above? OA 6.5 OB 7 OC. 6 D. 9
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Ответ:
Sample size n is 9.
The sample mean M is 84.
Step-by-step explanation:
Given : A professor gives a statistics exam.
The exam has 100 possible points.
The scores for the students in the second classroom are as follows:
88 84 84 52 100 84 92 84 88
Since , the number of scores of different students= 9
∴ Sample size is n= 9.
Now , Sample mean =
Hence, the sample mean M is 84.