Null hypothesis is the hypothesis that the effect relationship, or the other manifestations of variables and data under investigation does not exist.
I null hypothesis , a study is started in which an assumption is made that there is no difference between the experimental and control groups.
This assumption of no difference between between the experimental and control groups is known as null hypothesis.
If the results of the study indicate a P value, it indicates that there is a difference between the groups and it is determined with the help of the P value that this difference is due to chance.
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<u>Answer:</u>
Only failure in school performance and poor coping skills
Option: (D)
<u>Explanation:</u>
- Drug abuse is a harmful habit. In fact, is a harmful brain disease due to which a person repeatedly needs to consume a drug in spite of the harmful consequences of consuming that drug.
- Due to drug abuse, the person loses his/her ability to control the need to consume the drug.
- Drug abuse has many harmful consequences. Some of them are failure in academic performance and poor coping skill.
- The person with drug addiction has low learning ability and lacks the socializing skills.
