Mathematics, 15.04.2020 21:37 chamarabrown6529

We want to have a survey and ask people working for IT companies if they prefer Skype to mobile phones for making calls. We want to show that in IT companies more than 20% of employees prefer to use Skype rather than a mobile phone. The null hypothesis is H0:p=0.2H0:p=0.2. State the alternative hypothesis and find out if we should use a left-tail, a right-tail or a two-tailed test to support the alternative hypothesis.

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We want to have a survey and ask people working for IT companies if they prefer Skype to mobile phon...