1. (a) Sampling plan for selection of units for testing.

   1. (1) The requirements of § 429.11 are applicable to televisions; and

   2. (2) For each basic model of television, samples shall be randomly selected and tested to ensure that—

      1. (i) Any represented value of power consumption of a basic model for which consumers would favor lower values shall be greater than or equal to the higher of:

         1. (A) The mean of the sample, where:

            

            and x is the sample mean; n is the number of samples; and xi is the i ^th sample;

            Or,

         2. (B) For on mode power consumption, the upper 95 percent confidence limit (UCL) of the true mean divided by 1.05, where:

            

            and x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.95 is the t-statistic for a 95% one-tailed confidence interval with n−1 degrees of freedom (from appendix A of this subpart).

            And

         3. (C) For standby mode power consumption and power consumption measurements in modes other than on mode, the upper 90 percent confidence limit (UCL) of the true mean divided by 1.10, where:

            

            and x is the sample mean; s is the sample standard deviation; n is the number of samples; and t0.90 is the t-statistic for a 90% one-tailed confidence interval with n−1 degrees of freedom (from appendix A of this subpart).

      2. (ii) Any represented annual energy consumption of a basic model shall be determined by applying the AEC calculation in section 4 of appendix H to subpart B of part 430 of this chapter to the represented values of power consumption as calculated pursuant to paragraph (a)(2)(i) of this section.

      3. (iii) Rounding requirements. The represented value of power consumption and the represented annual energy consumption shall be rounded as follows:

         1. (A) For power consumption in the on and standby modes, the represented value shall be rounded according to the requirements specified in sections 4.1 and 4.3 of appendix H to subpart B of part 430 of this chapter.
         2. (B) For annual energy consumption, the represented value shall be rounded according to the requirements specified in section 3.4 of appendix H to subpart B of part 430 of this chapter.
2. (b) [Reserved]

[78 FR 63840, Oct. 25, 2013, as amended at 88 FR 16109, Mar. 15, 2023]