II. Determine if one-tailed test or two-tailed test fits the given alternative hypothesis.
1. The mean height of Grade 12 students is less than 66 inches.
Answer: ___________________________
2. The standard deviation of their height is not equal to 5 inches.
Answer: ___________________________
3. Male Grade 7 and Grade 12 students differ in height on average.
Answer: ___________________________
4. The proportion of senior male students’ height is significantly higher than the senior female students.
Answer: ___________________________
5. The average grade of Grade 11 students in Statistics is lower than their average grade in Calculus.
Answer: ___________________________
1. One-tailed (left-tailed) test.
2. Two-tailed test.
3. Two-tailed test.
4. One-tailed (right-tailed) test.
5. One-tailed (left-tailed) test.
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