Do you jog? An opinion poll asks an SRS of 1500 adults, Do you happen to jog? Suppose (as is approximately correct) that the population proportion who jog is p 5 0.15. In a large number of samples, the proportion p^ who answer Yes will be approximately Normally distributed with mean 0.15 and standard deviation 0.009. Sketch this Normal curve and use it to answer the following questions. (a) What percent of many samples will have a sample proportion who jog that is 0.15 or less? Explain clearly why this percent is the probability that p^ is 0.15 or less. (b) What is the probability that p^ will take a value between 0.141 and 0.159? (Use the 689599.7 rule.) (c) What is the probability that p^ does not lie between 0.141 and 0.159? (d) Would you be surprised if the sample proportion who said they jogged was p^ 5 0.17? Justify your answer.
Week 6 Tuesday, September 27, 2016 1:02 PM Complement system- helps Abs lyse cells Bordet & erlich ○ Bacteriolysis of vibrio req'd 2 subs ○ Found Ps working w AB ○ "Completes" activity of AB 30+ Ps, iis Made by hepatocytes, macs, & some epithelial cells Steps: (list) 1. Initiators: C1q, MBL, ficolins 2. Convertase activators(C1r, C1s, C4b, C2a) & enzymeatic mediators(C3 convertase, C5 convertase) 3. Opsonins 4. Anaphylatoxins(inflamm) 5. Membrane attack complex(MAC) 6. complement receptors 7. Regulatory Steps described: - Activation(3 ways) i. Classical pathway(AB immune complexes)- initiated by AB binding 1) IgM or IgG binds anti