Chapter 12, Problem 39PT4

To determine

To identify: the most justified option from (a) to (e)

1. The mean fear ratings increased from 19898 to 1991.
2. It appears that children with high fear rating in 1989 had lower ratings in 1991.
3. It appears that children with high fear rating in 1989 had higher ratings in 1991.
4. There is no evidence of significant relationship between mean fear ratings of 1989 and 1991.
5. There are sufficient inconsistencies in the data to make it impossible to draw any conclusions.

With the given regression output and plots for the data.

  

  

Answer to Problem 39PT4

Option (c) is correct.

1. It appears that children with high fear rating in 1989 had higher ratings in 1991.

Explanation of Solution

(a) As the R square of the regression model is 0.274 is very less the revealing that model is not a good fit and correlation between mean fear ratings of 1989 and 1991 is which has weak association between fear ratings in two years but with a p value of 3.09* 10^-8 which is highly significant one can just say that overall it appears that children with high fear rating in 1989 had higher ratings in 1991. Hence option (c) is correct.