Babies born extremely prematurely run the risk of various neurological problems and tend to have lower IQ and verbal ability scores than babies who are not premature. The article "Premature Babies May Recover Intelligence, Study Says"t summarized medical research that suggests that the deficit observed at an early age may decrease as children age. Children who were born prematurely were given a test of verbal ability at age 3 and again at age 8. The test is scaled so that a score of 100 would be average for normal-birth-weight children. Data that are consistent with summary quantities given in the paper for 50 children who were born prematurely were used to generate the accompanying Minitab output, where Age3 represents the verbal ability score at age 3 and Age8 represents the verbal ability score at age 8. Paired T-Test and CI: Age8, Age3 N Mean StDev Se Mean Age8 50 97 . 28 16 . 96 2 . 40 Age 3 50 87. 39 13 . 81 1 . 95 Difference 50 9 . 89 22 . 11 3 .13 LA USE SALT Use the information in the Minitab output to construct a 95% confidence interval for the change in mean verbal ability score from age 3 to age 8. You can assume that it is reasonable to regard the sample of 50 children as a random sample from the population of all children born prematurely. (Use ud = MAge8 - MAge3. Use SALT. Round your answers to two decimal places.) Interpret the interval. O We are 95% confident that the change in mean verbal ability score from age 3 to age 8 for the children in this study falls within this interval. There is a 95% chance that the change in mean verbal ability score from age 3 to age 8 falls directly in the middle of this interval. We are 95% confident that the true change in mean verbal ability score from age 3 to age 8 falls within this interval. There is a 95% chance that the change in mean verbal ability score from age 3 to age 8 falls within this interval. There is a 95% chance that the true change in mean verbal ability score from age 3 to age 8 falls directly in the middle of this interval. Need Help? Read It