170135_inorganicventures_flipping

T-test: Form 1 Compares average to “true” value ! " :̅ % = ' (mean is equal to true value) ( )*+) =̅ ,-. / 0 , where 1̅ , = / 2 (standard error)

Interpretation: If ( )*+) ≤ ( )456 , accept ! " (no statistical difference) If ( )*+) > ( )456 , reject ! " (statistical difference)

Example

! "#$" =̅ ' − ) * + = 10.067 − 10.000 0.003578 = 18.7271 ! "567 = 2.776 ! "#$" > ! "567 Reject H o à There is a statistical difference

Concentration (ppm)

Mean

10.067

Standard Deviation

0.008

Observations Made-to-Value

5

10.000

* + = * 9 = 0.008 5 = 0.003578