One classical experiment in extrasensory perception tests the ability of an individual to show telepathy - to read the mind of another individual. This test uses five cards with different designs, all known to both participants. In a trial, the 'sender' sees a randomly chosen card and concentrates on the design. The 'receiver' attempts to guess the identity of the card. Each of the five cards is equally likely to be chosen, and only one card is the correct answer at any point. Which of the following is an appropriate null hypothesis for this telepathy experiment? The proportion of correctly identified cards by the receiver is greater than 0.2 The proportion of correctly identified cards by the receiver is 0.2 The proportion of correctly identified cards by the receiver is something other than 0.2 The proportion of correctly identified cards by the receiver is less than 0.2 Which of the following is an appropriate alternative hypothesis for this telepathy experiment, if a two tailed test is to be used? The proportion of correctly identified cards by the receiver is greater than 0.2 The proportion of correctly identified cards by the receiver is 0.2 The proportion of correctly identified cards by the receiver is something other than 0.2 The proportion of correctly identified cards by the receiver is less than 0.2 Which of the following is an appropriate alternative hypothesis for this telepathy experiment, if a one tailed test is to be used? The proportion of correctly identified cards by the receiver is greater than 0.2 The proportion of correctly identified cards by the receiver is 0.2 The proportion of correctly identified cards by the receiver is something other than 0.2 The proportion of correctly identified cards by the receiver is less than 0.2

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One classical experiment in extrasensory perception tests the ability of an individual to show telepathy - to read the mind of another individual.  This test uses five cards with different designs, all known to both participants.  In a trial, the 'sender' sees a randomly chosen card and concentrates on the design.  The 'receiver' attempts to guess the identity of the card.  Each of the five cards is equally likely to be chosen, and only one card is the correct answer at any point.

Which of the following is an appropriate null hypothesis for this telepathy experiment?

   

The proportion of correctly identified cards by the receiver is greater than 0.2

   

The proportion of correctly identified cards by the receiver is 0.2

   

The proportion of correctly identified cards by the receiver is something other than 0.2

   

The proportion of correctly identified cards by the receiver is less than 0.2

Which of the following is an appropriate alternative hypothesis for this telepathy experiment, if a two tailed test is to be used?

   

The proportion of correctly identified cards by the receiver is greater than 0.2

   

The proportion of correctly identified cards by the receiver is 0.2

   

The proportion of correctly identified cards by the receiver is something other than 0.2

   

The proportion of correctly identified cards by the receiver is less than 0.2

Which of the following is an appropriate alternative hypothesis for this telepathy experiment, if a one tailed test is to be used?

   

The proportion of correctly identified cards by the receiver is greater than 0.2

   

The proportion of correctly identified cards by the receiver is 0.2

   

The proportion of correctly identified cards by the receiver is something other than 0.2

   

The proportion of correctly identified cards by the receiver is less than 0.2

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