**ETME360****
E - Handout
Probability in multi-sample experiments:
SOLUTION
Use of the Z-function table.
ETME360
R. Larson**

1.
1000 samples are tested to failure in a 4-point bending fixture.
The force required to cause failure of each specimen is measured under
multi-sample conditions. The mean value of the force required to break the
specimens was 275.00 lbf. The standard deviation of the data was found to be
17.50
lbf. What is the probability that
the breaking strength of a sample is greater than 290.00 lbf?

2.
If the sample size is increased to 10,000 specimens,
__how
many __(What numerical quantity) of these parts would be expected to break if tested in the same
4-point bending fixture and subjected to a load of 290
lbf? 300 lbf? 325.00 lbf?