Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements yield x overbarequals103.26, y overbarequals102.05, requals0.897, P-valueequals0.000, and ModifyingAbove y with caret equals negative 13.47 plus 1.12 x, where x represents the IQ score of the twin born first. Find the best predicted value of ModifyingAbove y with caret given that the twin born first has an IQ of 105? Use a significance level of 0.05.

Answer

The  value is  

Step -by -step -explanation :

 From the question we are old that

         The sample size is  n =  20  

         The sample mean for the first person of each twin is  

         The sample mean for the second person of each twin is  

          The  correlation between both data is  r =  0.908

         The p-value is  p-value  =  0.000

          The  equation  

Here we are told that x represents  the first person to be given birth to among each twin  

       The value of x  considered is  x = 105

          Generally given that p-value  =  0.000

Then  the  Predicted value of    is mathematically represented as

=>        

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none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square