of 0,99 so be 2.58 .
2) (A) Determine the Rank correlation between \( X \) and \( Y \)
\( \left.\begin{array}{llllllllllllll}X & 5 & 8 & 6 & 8 & 5 & 4 & 9 & 7 & 10 & 6 \\ \text { Y } & 7 & 9 & 7 & 7 & 6 & 5 & 8 & 5 & 8 & 0\end{array}\right] \)
(NOTE: Interpret your answers)
(B) Investigating the gender differences in proactive and reactive aggression in a sample of 323 children and adolescents ( 68 females and 255 males). The subjects were from unsolicited consecutive referrals to a residential treatment center and a pediatric psychopharmacology clinic serving a tertivry hospital and medical school. In the sample, 31 of the females and 53 of the males reported sexul abuse. We wish to construct a 99 percent confidence interval for the difference between the proportions of sexual abuse in the two sampled populations. Given the reliability factor from Table as 2.58
3)
(A) Tostudy the performance of newly-designed diagnosing equipment, it has timed over a marked course under various wind and water conditions. Use the following data (in minute) to test the null bypothesis that the equipment's performance is not affected by the differences in wind and water condifions;
\begin{tabular}{|l|l|l|l|l|l|l|}
\hline Calm Condition & 20 & 17 & 14 & 24 & 23 & 18 \\
\hline Moderaic Condition & 21 & 23 & 16 & 25 & 18 & 23 \\
\hline Choppy Condition & 26 & 24 & 23 & 29 & 21 & 25 \\
\hline
\end{tabular}
