Today’s Safety Zen. Is it safer to use vacuum systems than pressured systems?. vs. Graph Interpretation Problems. Graph vs. picture Slope vs. height Disconnect from data tables. Worst Graphing Ever?. Distinguish misconceptions from errors. Which is bigger?. 1/3 vs. 1/8 2.36 vs. 4.2
Today’s Safety Zen
If you have 23 people in a room, what is the probability that two of them will have the same birthday?
A woman has a positive mammogram. What is her
risk of actually having breast cancer?
A. Out of 10 women with a positive mammogram, ~9 have breast cancer.
B. Out of 10 women with a positive mammogram, ~1 has breast cancer.
C. The probability that she has breast cancer is about 1%.