Someone has conducted a study to see if there is increased risk of getting lung cancer if you work in a coal mine. In group 1, 30 of the 150 coal miners got lung cancer. In group 2, 5 out of the 250 non- coal miners got lung cancer. What is the sample relative risk?

Ron works for a large american company that is thinking about buying another large company. before the deal is announced, ron writes an article for the paper that tells all of the details of the possible business deal. ron's boss fires him for giving secret company information to the public. why is ron's company allowed to fire him without violating his "freedom of speech" rights? a. companies are fully protected by free speech laws. b. ron's boss was not born in america. c. newspapers do not count as speeches because they are written. d. ron's company has a right to protect its interests. the answer is d

You are a member of the jury for a murder case. the prosecution has presented dna evidence linking the defendant to the crime scene. the defense claims that dna evidence using str analysis with 13 markers is not sufficient to reliably distinguish between people. what do you think? a. the defense is right. str analysis with 13 markers gives a 1 in 1 million chance of two people having the same pattern, leaving a reasonable doubt. b. str analysis is not sufficient. the defendant's entire genome should be sequenced. the prosecution will have to consult a genomic library to make sure their dna evidence is valid. c. the prosecution is right. str analysis with 13 markers gives a 1 in 10 billion or greater chance that two people will have the same pattern. this person was at the crime scene. d. dna evidence is not generally accepted by legal experts.

Abrief, "first-step" presentation of a work to be completed is called a