Standardizing the value
P ( Z < ? ) = 4% = 0.04 ( Bottom 4% )
Looking for the probability 0.04 in standard normal tabel to find the critical value Z
Z = - 1.75
P ( Z > ? ) = 4% = 0.04 ( Top 4% ) = 1 - P ( Z < ? )
P ( Z > ? ) = 1 - P ( Z < ? ) = 1 - 0.04 = 0.94
Looking for the probability 0.04 in standard normal tabel to find the critical value Z
Z = 1.75
X = 8.270 ( Bottom 4% )
X = 8.410 ( Top 4 % )
The two weights that separate the top 4% and bottom 4% is 8.410 & 8.270.
The weights of certain machine components are normally distributed with a mean of 8.34 ounces and...
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