What is the standard of proof required for a jury to accept and accept that correct scientific procedures were used in the case?

also requires proof of expert qualifications to testify as to general acceptance and demonstration that correct scientific procedures were used in the particular case].)⁷ The Kelly "approach is intended to prevent lay jurors from being unduly influenced by procedures which seem scientific and infallible, but which actually are not." ( People v. Webb (1993) 6 Cal.4th 494, 524, 24 Cal.Rptr.2d 779, 862 P.2d 779 ; see People v. Stoll (1989) 49 Cal.3d 1136, 11551156, 265 Cal.Rptr. 111, 783 P.2d 698.)