Recent content by Sixdaysgrace

1 - \Phi(-2/5) \approx 0.655, sir what is this equation? Could u please explain it for me?

Hi Physics Forum! I hope this is the right section... I couldn't find a section on statistics. This is a rather easy question but I can't seem to get the answer that the answer key says! Average Life expectancy μ=72 standard Deviation ( in years ) δ=5 The question: Recent studies have...