Question

Exercise A beginning course in Chemistry has 448 students. For a three-week period, the daily absentees were recorded as follows: \[ 7 ; 16 ; 8 ; 10 ; 17 ; 5 ; 9 ; 22 ; 18 ; 15 ; 7 ; 24 ; 20 ; 13 ; 11 \] Using Wilcoxon signed-ranks test, does this information provide evidence at \( 5 \% \) level of significance, that the median number of daily absentees is greater than 15 ?

          Exercise
A beginning course in Chemistry has 448 students. For a three-week period, the daily absentees were recorded as follows:
\[
7 ; 16 ; 8 ; 10 ; 17 ; 5 ; 9 ; 22 ; 18 ; 15 ; 7 ; 24 ; 20 ; 13 ; 11
\]

Using Wilcoxon signed-ranks test, does this information provide evidence at \( 5 \% \) level of significance, that the median number of daily absentees is greater than 15 ?

Exercise
A beginning course in Chemistry has 448 students. For a three-week period, the daily absentees were recorded as follows:

7 ; 16 ; 8 ; 10 ; 17 ; 5 ; 9 ; 22 ; 18 ; 15 ; 7 ; 24 ; 20 ; 13 ; 11

Using Wilcoxon signed-ranks test, does this information provide evidence at 5 % level of significance, that the median number of daily absentees is greater than 15 ?

Added by Marina G.

Elementary Statistics

Robert Johnson, Patricia Kuby 11th Edition

Chapter 14

Instant Answer

Solved by Expert Cheng Zhang

Step 1

- Null hypothesis (H0): The median number of daily absentees, M, is equal to 15. - Alternative hypothesis (H1): The median number of daily absentees, M, is greater than 15. Show more…

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Exercise A beginning course in Chemistry has 448 students. For a three-week period, the daily absentees were recorded as follows: \[ 7 ; 16 ; 8 ; 10 ; 17 ; 5 ; 9 ; 22 ; 18 ; 15 ; 7 ; 24 ; 20 ; 13 ; 11 \] Using Wilcoxon signed-ranks test, does this information provide evidence at \( 5 \% \) level of significance, that the median number of daily absentees is greater than 15 ?