§429.33. Ceiling fan light kits.
10 C.F.R. § 429.33
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 to subpart B).
Notes, amendments, and revision history
Amendments
[76 FR 12451, Mar. 7, 2011; 76 FR 24772, May 2, 2011, as amended at 80 FR 80225, Dec. 24, 2015; 81 FR 632, Jan. 6, 2016; 81 FR 43425, July 1, 2016; 84 FR 8413, Mar. 8, 2019; 87 FR 43978, July 22, 2022; 87 FR 54330, Sept. 6, 2022; 87 FR 53638, Aug. 31, 2022; 88 FR 21072, Apr. 10, 2023; 89 FR 82062, Oct. 9, 2024; 90 FR 43379, Sept. 9, 2025]
Authority
Authority: 42 U.S.C. 6291-6317; 28 U.S.C. 2461 note.
Source
Source: 76 FR 12451, Mar. 7, 2011, unless otherwise noted.
Amendments
[76 FR 12451, Mar. 7, 2011; 76 FR 24772, May 2, 2011, as amended at 80 FR 80225, Dec. 24, 2015; 81 FR 632, Jan. 6, 2016; 81 FR 43425, July 1, 2016; 84 FR 8413, Mar. 8, 2019; 87 FR 43978, July 22, 2022; 87 FR 54330, Sept. 6, 2022; 87 FR 53638, Aug. 31, 2022; 88 FR 21072, Apr. 10, 2023; 89 FR 82062, Oct. 9, 2024; 90 FR 43379, Sept. 9, 2025]