An instructor wants to compare final grades of students in her online class and face-to-face class. Instructor selects 10 students randomly from each class and the following table shows the final grades of those students. 5.5 7 6 7 6.5 6 9 6.5 6.5 6.5 The 81st percentile of time students sleep per night is ______hours.
1 answer
Question:
An instructor wants to compare final grades of students in her online class and face-to-face class. Instructor selects 10 students randomly from each class and the following table shows the final grades of those students.
5.5
7
6
7
6.5
6
9
6.5
6.5
6.5
The 81st percentile of time students sleep per night is ______hours.
5.5
7
6
7
6.5
6
9
6.5
6.5
6.5
The 81st percentile of time students sleep per night is ______hours.
Answers
Answer:7 hoursStep-by-step explanation:The formular of percentile is given as;n = (P / 100) * Nwhere;n = ordinal rankP = Percentile N = Number of valuesThe grades are given as;5.5, 7, 6, 7, 6.5, 6, 9 , 6.5, 6.5 , 6.5 Arranging in increasing order;5.5, 6, 6, 6.5, 6.5, 6.5, 6.5, 7, 7, 9n = (81/100) * 10 = 8.1 ≈ 8The 81st percentile is the 8th term.The 8th term = 7
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