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- Okay class, let's move on to Null hypotheses. So, when we say Null Hypothesis it is an initial claim based on previous analyses, which the researcher tries to disproves, reject, or nullify. It shows no significant difference between two parameters. It is denoted by Ho
- "NULL HYPOTHESES"
- Let's proceed to Alternative hypotheses. Alternative hypothesis is contrary to the null hypothesis ,it shows that there is significant difference, an effect, change, relationship between a parameter and specific value. It is denoted by Ha.
- "ALTERNATIVE HYPOTHESES"
- For easier formulation of null and alternative hypotheses, you must remember these key words and mathematical symbols.
- Null Hypotheses, Ho= (equal to, the same as, not changed from, is)Alternative Hypotheses, Ha≠ (not equal, different from, changed from, not the same as) > (greater than, above, higher than, longer than, bigger than, increased, at least)< (less than, lower than, below, smaller than, shorter than, decreased or reduced from, at most)
- Sir, may I ask? How can we easily formulate Null and Alternative Hypotheses?
- "STATE THE NULL AND ALTERNATIVE HYPOTHESES"EXAMPLES
- The average age of bus drivers in Malabon City is 38.8 years.Ho: μ = 38.8 yearsHa: μ ≠ 38.8 yearsThe average numbers of calories of a low calorie meal is at most 300.Ho: μ = 300Ha: μ < 300
- OKAY, CLASS. THAT'S ALL FOR TODAY. THANK YOU FOR PARTICIPATING, JOB WELL DONE!!
- "STATE THE NULL AND ALTERNATIVE HYPOTHESES"(YOUR TURN)
- Excellent!
- Ho: μ= 2.7Ha: μ≠ 2.7The null hypotheses is 2.7 but the alternative hypotheses or the teacher is trying prove that it's not 2.7
- EXAMPLE 5:A teacher wishes to test if the average GPA of students in the highsschool is different from 2.7. State the null and alternative hypotheses.
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