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Significance Test for a Mean (8.5 And 8.6)
A professor believes students at her school are getting fewer than 8 hours of sleep each night, on average. To test this beliet, she asks a random sample
of 24 students. How much sleep did you get last night Here are the data (in hours)
8
6
9
6
7
5.5
6
5.5
7
6
6
5.5
10
6
6.5
8.5
7.5
8
7
8
5.5
6
6
7.5
The mall and alterative hypotheses would be:
O HR=8
HR<8
H: R=8 H = 6.8
o HÔI = 68 H : H = 8
H>8