| $z$ | $\mathrm { P } ( 0 \leqq Z \leqq z )$ |
| 1.0 | 0.3413 |
| 1.2 | 0.3849 |
| 1.4 | 0.4192 |
| 1.6 | 0.4452 |
A music club is preparing for its regular concert this year. Based on past experience, the attendance rate among invited guests is 0.5. When 100 people are randomly selected from the invited guests,
\begin{center}
\begin{tabular}{ | c | c | }
\hline
$z$ & $\mathrm { P } ( 0 \leqq Z \leqq z )$ \\
\hline
1.0 & 0.3413 \\
\hline
1.2 & 0.3849 \\
\hline
1.4 & 0.4192 \\
\hline
1.6 & 0.4452 \\
\hline
\end{tabular}
\end{center}
what is the probability that the attendance rate is at least 0.43 and at most 0.56, using the standard normal distribution table on the right? [4 points]\\
(1) 0.8041\\
(2) 0.7698\\
(3) 0.7605\\
(4) 0.7262\\
(5) 0.6826