Physics homework help. In which case would testing the null hypothesis not involve a one-tailed statistical test?H1: Incentive pay for teachers does affect student achievementH1: Higher sales tax rates does not reduce state tax revenuesH1: Extending the duration of unemployment benefits does not increase the length of joblessnessH1: Smoking does not reduce life expectancyI have the above quiz question. Can someone please explain which is the answer and why? I don’t understand the difference between which would be one tailed and which would be two tailed. Thanks.
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