Consider the situation in Exercise 4.32 on page 119. The distribution of the number of imperfections per 10 meters of synthetic failure is given by x 01234 f(x) 0.41 0.37 0.16 0.05 0.01 Find the variance and standard deviation of the number of imperfections.
Some people should not get MMR vaccine or should wait. • Anyone who has ever had a life-threatening allergic reaction to the antibiotic neomycin, or any other component of MMR vaccine, should not get the vaccine. Tell your doctor if you have any severe allergies. • Anyone who had a life-threatening allergic reaction to a previous dose of MMR or MMRV vaccine should not get another dose. • Some people who are sick at the time the shot is scheduled may be advised to wait until they recover before getting MMR vaccine. • Pregnant women should not get MMR vaccine. Pregnant women who need the vaccine should wait until after giving birth. Women should avoid getting pregnant for 4 weeks after vaccination with MMR vaccine. • Tell your doctor if the person getting the vaccine: ◦ Has HIV/AIDS, or another disease that affects the immune system ◦ Is being treated with drugs that affect the immune system, such as steroids ◦ Has any kind of cancer ◦ Is being treated for cancer with radiation or drugs ◦ Has ever had a low platelet count (a blood disorder) ◦ Has gotten another vaccine within the past 4 weeks ◦ Has recently had a transfusion or received other blood products • Any of these might be a reason to not get the vaccine, or delay vaccination until later. KIDS Children should not get MMRV vaccine if they: • Have ever had a life-threatening allergic reaction to a previous dose of MMRV vaccine, or to either MMR or varicella vaccine. • Have ever had a life-threatening allergic reaction to any component of the vaccine, including gelatin or the antibiotic neomycin. Tell the doctor if your child has any severe allergies. • Have HIV/AIDS, or another disease that affects the immune system. • Are being treated with drugs that affect the immune system, including high doses of oral steroids for 2 weeks or longer. • Have any kind of cancer. • Are being treated for cancer with radiation or drugs. Check with your doctor if the child: • Has a history of seizures, or has a parent, brother or sister with a history of seizures. • Has a parent, brother or sister with a history of immune system problems. • Has ever had a low platelet count, or another blood disorder. • Recently had a transfusion or received other blood products. • Might be pregnant. Children who are moderately or severely ill at the time the shot is scheduled should usually wait until they recover before getting MMRV vaccine. Children who are only mildly ill may usually get the vaccine. SIDE EFFECTS OF MMR • Pain • redness • swelling • fever • mild rash
