Question

solve using formulas and tables and not minitab please

Tennis elbow is thought to be aggravated by the impact experienced when hitting the ball The article "Forces on the Hand in the Tennis One-Handed Backhand" (Int. J. Sport Biomech. 1991: 282-292) reported the force (Newtons) on the hand just after impact on a one-handed

solve using formulas and tables and not minitab please

Answer 1

Zu Tu — + — I I | ds , z/vi* (*z — Tx)

xbar1 = 40.3, xbar2 = 21.4

n1 = 6, n2 = 8

sp

9.6639

df =n1+n2-2 = 12

t = 2.179 { =t.inv.2t(0.05,12) in Excel}

hence

Confidence Interval The 95% confidence interval is 7.529 < Mi - U2 < 30.271.