5. The table below lists the winning times in the 5000 meter men\'s Speed Skatin

Question

5. The table below lists the winning times in the 5000 meter men's Speed Skating event at the Winter Olympics from 1992 through 2014. Year Time in seconds 1072 443.61 1976 444.18 1980 420.29 1984 432.28 1988 404.63 1992 419.97 1994 394.96 998 382.2 2002 374.66 2006 374.68 2010 374.6 2014 370.76 A linear regression analysis found that the winning time in seconds (t) for a is in years since 1988 is given by: 1 =-1.97r + 444.49 What does this model predict will be the winning time in 2018 in seconds? Answers are rounded to two decimal places.

Explanation / Answer

since x is in year since 1988

i.e if we have to calculate time is sec at 2018

we should substitute x= 2018-1988=30

so at x=30

t=-1.97*30+444.49=385.39

Therefore this model predict wining time 385.39 sec in 2018

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