Document ID: chunk:federal_register_of_legislation:F2024C00311:reg:3:p1
Version: federal_register_of_legislation:F2024C00311
Segment Type: reg
Provision Reference: reg 3 (pt 1/4)
Character Range: 164238–168970

3     At least 3 201 prepackages                         125 packages          0.234                                7

where:
t1‑ is the one‑sided significance level of 99.5% derived from a Student's t distribution.
Note: A Student's t distribution is a statistical term.
n is the number of packages in the sample.

4.36  Tolerable deficiencies
  Determine the tolerable deficiency (T) appropriate for the nominal quantity of the prepackages using the following table.

Nominal quantity of product (Qn) in g or mL                                                                                             Tolerable deficiency (T) a
Percent of Qn                                                                                                                           g or mL
0 to 50                                                                                                                                 9                           –
50 to 100                                                                                                                               –                           4.5
100 to 200                                                                                                                              4.5                         –
200 to 300                                                                                                                              –                           9
300 to 500                                                                                                                              3                           –
500 to 1 000                                                                                                                            –                           15
1 000 to 10 000                                                                                                                         1.5                         –
10 000 to 15 000                                                                                                                        –                           150
15 000 to 50 000                                                                                                                        1                           –
a T values are to be rounded up to the next  of a g or mL for Qn ≤ 1 000 g or mL and to the next whole g or mL for Qn > 1 000 g or mL

Nominal quantity of product (Qn) in length  Percent of (Qn)
Qn ≤ 5 m                                    No tolerable deficiency allowed
Qn > 5 m                                    2

Nominal quantity of product (Qn) in area  Percent of (Qn)
All Qn                                    3

Nominal quantity of product (Qn) in count                                                                                                                                                                                                                     Percent of (Qn)
Qn ≤ 50 items                                                                                                                                                                                                                                                 No tolerable deficiency allowed
Qn > 50 items                                                                                                                                                                                                                                                 1 b
b Compute the value of T by multiplying the nominal quantity by 1% and rounding the result up to the next whole number. The value may be larger than 1% due to the rounding but this is accepted because the products are whole items and cannot be divided.

4.37  Weighted average quantity
  The weighted average quantity of the packages in a sample is worked out using the formula:
x + (s × c)
where:
x is the sample mean.
s is the standard deviation of the sample.
c is the sample correction factor in column 4 of the table in regulation 4.34.

4.38  Test failure
 (1) For paragraph 20(1)(t) of the Act, this regulation prescribes circumstances in which a group of prepackages is taken to have failed testing in accordance with AQS test procedures
 (2) A circumstance is that the weighted average quantity of product in the sample of prepackages is less than the nominal quantity.
 (3) A circumstance is that the sample includes more inadequate prepackages, containing a quantity of product less than Qn – T, than is permitted in column 5 of the table in regulation 4.34.
Note: This is also known as a T1 error.
An inadequate prepackage that is found to contain an actual quantity less than the nominal quantity minus