Certainly! Here are the null hypothesis (H0) and the two-tailed alternative hypothesis (H1) for the iPhone effect study: - Null hypothesis (H0): There is no significant difference in the level of connectedness and empathetic concern between participants who have a mobile phone present during a conversation and those who do not. - Alternative hypothesis (H1): There is a significant difference in the level of connectedness and empathetic concern between participants who have a mobile phone present during a conversation and those who do not. In statistical terms, this would typically be expressed as: - H0: _phone present = _phone absent - H1: _phone present _phone absent where: - _phone present represents the mean level of connectedness and empathetic concern when a mobile phone is present. - _phone absent represents the mean level of connectedness and empathetic concern when a mobile phone is absent. The two-tailed alternative hypothesis suggests that the researchers are interested in whether there is any difference in connectedness and empathetic concern, regardless of whether having a mobile phone present increases or decreases these measures