I. State the null and alternative hypothesis for each statement.
1. A light bulb manufacturer claims that the mean life of a certain type of light bulb is more than 750 hours.
H0: _____
Ha: _____
2. A study claims that the mean survival time for certain cancer patients treated immediately with chemotherapy and radiation is 24 months.
H0: _____
Ha: _____
3. A medical trial is conducted to test whether or not a new medicine reduces uric acid by 50%.
H0: _____
Ha: _____
4. We want to test whether the general average of students in Math is different from 80%.
H0: _____
Ha: _____
5. We want to test whether the mean height of Grade 8 students is 58 inches.
H0: _____
Ha: _____
1.
"H_0:\\mu\\le750"
"H_a:\\mu>750"
2.
"H_0:\\mu=24"
"H_a:\\mu\\not=24"
3.
"H_0:p=0.5"
"H_a:p\\not=0.5"
4.
"H_0:p=0.8"
"H_a:p\\not=0.8"
5.
"H_0:\\mu=58"
"H_a:\\mu\\not=58"
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