3 Empø es at ap rtich ar comp y \(\mathbf { h }\) \textbackslash ＆ b en wo kg seqnb s each \(\mathbf { d y }\) ，frm 9 am to 4 p ．To try to red e ab en e，th cm \(\mathbf { p } \mathrm { y }\) d cid s to in rd e ＇flex－time＇ad all emp 甲 es to wo k th ir see nb s each d y at ay time b tween 7 am ad 9 p ．Fo a rach sampe \(\mathbf { 6 } \mathbf { 0 }\) emp \(\boldsymbol { \varphi }\) es，th m b rs 6 b s of ab en e in th \(y\) arb fo e ad th \(y\) ar after th in rd tin 6 flex－time are g t rit t fb low ig ab e．
| Emp \(\varphi\) e | \(A\) | \(B\) | \(C\) | \(D\) | \(E\) | \(F\) | \(G\) | \(H\) | \(I\) | \(J\) |
| Befo e | 2 | 3 | 6 | 4 | 0 | 5 | 8 | 3 | 6 | 0 |
| After | 3 | 3 | 0 | 2 | 3 | 2 | 6 | 3 | 0 | 0 |
Test，at th \textbackslash ％sig ficance le l，wh th r th \(\mathbf { p }\) atin mean m br \(\mathbf { 6 }\) b s \(\mathbf { 6 }\) ab en e \(\mathbf { s }\) d creased b lw ig b in rd tim flex－time，s tatig pr ssm p it b tm ak．［ア