RStudio File Edit Code View Plots + Final Project.Rmd* × Session Build Debug Profile Tools Help Go to file/function Addins Assignment7.Rmd x ABC Knit confi Next Prev All Replace In selection INU Match case Whole word Regex Wrap 126 127 128 129 130 131 132 133 134 135 136 126:147 Console Insert ▾ Run - Replace All 12. Calculate a 90\% confidence interval for the average baby weight of a full-term baby. Interpret this confidence interval in a clear sentence. 13. What is the correlation between father's age and mother's age? Comment on the strength of this association. 14. A magazine in North Carolina suggested that fathers are on average older than mothers. Write this out as a null and alternative hypothesis (use sentences as well as notation). Perform the test what is your conclusion? - 15. Calculate and interpret a 95% confidence interval for the average difference in fathers' and mothers' age. 16. Is there a significant average age difference between white and nonwhite mothers? Perform the full hypothesis test and state your conclusion. 17. Is there a significant average age difference between married and non-married mothers? (Top Level) = × R Markdown ÷