Question 8 In a certain population 95% of the population does not have a certain STD. A medical test has been devised that detects the STD 90% of the time in individuals who have the STD. The test also confirms that individuals who do not have the STD correctly 85% of the time. If an individual test positive for the STD what is the probability the individual in fact has the STD? This is a current issue in society - click here for some more info 2. 24% 73% O 26% No answer text provided.

Suppose that 20.56% of all vehicles on the road get a fuel economy of at least 35 miles per gallon (MPG). You conduct an observational study on a stretch of road outside of campus and record the make and model of 727 vehicles over a month long period. What is the probability that greater than 21.1% of the cars you observed get at least 35 MPG? (please show how to plug this into a scientific calculator) Question 4 options: 1) 0.3593 2) 0.5000 3) <0.0001 4) -23.9437 5) 0.6407

Is there such thing as negative probability? Or would this be considered a new variable?

Please read the passage on Antibiotics in Infancy and then answer the questions carefully to get the correct answers.