A drug testing company advertises a test for steroids that is 92% effective at detecting steroid use. It has a true negative effectiveness of 90%. Suppose 10% of 10,000 professional cyclists are believed to be using steroids. Suppose the haplessly named Lance Robustcalve tests positive for steroid use. What is the probability that he's really not using steroids? (Round your probability to the nearest tenth of a percent!)

10 points? me . its important ‼️‼️

What is the simplified form of square root of 400 to the 100th power ?

Nthe opening scene of the movie raiders of the lost ark, indiana jones replaces a golden statue with a bag of sand. the platform on which the statue is placed is designed to detect the mass of the statue. if the bag of sand has a different mass than the statue, then a mechanism triggers and destruction ensues. the density of gold is about 20\text{ g/cm}^320 g/cm 3 20, space, g, slash, c, m, start superscript, 3, end superscript. the density of sand can be estimated at 2.5\text{ g/cm}^32.5 g/cm 3 2, point, 5, space, g, slash, c, m, start superscript, 3, end superscript. the gold statue can be modeled as a cylinder with height 25\text{ cm}25 cm25, space, c, m and radius 8\text{ cm}8 cm8, space, c, m. in terms of \piπpi, what is the mass of sand indiana jones needs to avoid triggering the mechanism?