8.2.2c Taburan Normal Piawai (Contoh 3)
Contoh 3:
Penyelesaian:
Daripada sifir taburan normal piawai, k = 1.665
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2016/03/Picture36-1.png)
(b)
Daripada sifir taburan normal piawai,
Contoh 3:
Cari nilai bagi k jika
(a) P (Z > k) = 0.0480
(b) P (Z > k) = 0.8350
Penyelesaian:
(a)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2016/03/Picture31.png)
Daripada sifir taburan normal piawai, k = 1.665
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2016/03/Picture36-1.png)
(b)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2016/03/Picture38.png)
Daripada sifir taburan normal piawai,
k = –0.974 ← (nilai k adalah negatif kerana ia berada di sebelah kiri lengkung normal.
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2016/03/Picture37.png)
![](http://spmmatematiktambahan.blog.onlinetuition.com.my/wp-content/uploads/sites/8/2016/03/Picture37.png)