Standing on the null hypothesis, the teacher makes observations and sees the event which happens very rarely. That makes him doubt the hypothesis he made about the student initially. So, the teacher rejects the hypothesis and thinks that the student is lying.
Disclaimer: No inference is intended to make on the basis of a student’s bench position in a class. The teacher is taken male, as the male teacher’s photo was obtained from Unsplash. No inference about the gender and/or teacher is intended.
The teacher is checking everyone’s homework. He is going bench by bench. Students show their homework with a proud smile. The teacher reciprocates the smile with a “thumbs up”. The teacher reaches the last bench. A student, scratching his/her head, said with a worried face, “I forgot to bring my homework today”. The teacher believing him said, “It’s okay. Don’t forget to check your bag before leaving home next time”.
Days passed. The student on the last bench always kept saying that s/he forgot his/her homework. S/he got away from the teacher’s punishment a few times but when the forgetting reason came up again and again, the teacher started to doubt. The teacher was right to doubt and yes, the student was cheating.
Hypothesis testing is common in statistics as a method of making decisions using data. For that confession of data, Hypothesis Testing could be used to interpret and draw conclusions about the population using sample data. A Hypothesis Test helps in making a decision as to which mutually exclusive statement about the population is best supported by sample data.
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