Question
In: Statistics and Probability
The mean salary of professors in the US is $52,000.
The mean salary of professors in the US is $52,000.
The standard deviation of finishing times for runners in a marathon is at least 106 minutes.
At most 8% of college students cheat on exams.
The mean GPA of Students is less than 2.8.
Solutions
Expert Solution
Solution:
1)
The mean salary of professors in the US is $52,000.
H0 : 
= 52000 vs
Ha : 
52000
2)
The standard deviation of finishing times for runners in a marathon is at least 106 minutes.
H0 : 
106 vs Ha : <
106
3)
At most 8% of college students cheat on exams.
H0 : p 
0.08
vs Ha : p > 0.08
4)
The mean GPA of Students is less than 2.8.
H0 :
2.8 vs Ha : <
2.8
or
H0 : = 2.8 vs
Ha : < 2.8
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