A molecular biologist is studying the effectiveness of a particular enzyme to digest a certain sequence of DNA nucleotides. He divides six DNA samples into two parts, treats one part with the enzyme, and leaves the other part untreated. He then uses a polymerase chain reaction assay to count the number of DNA fragments that contain the given sequence. The results are as follows: Sample 123456 Enzyme present 22 16 11 14 12 30 Enzyme absent 43 34 16 27 10 40 Find a 95% confidence interval for the difference between the mean numbers of fragments
Keerthana Senthil Chessock AP Gov 3 Virginia’s Gubernatorial Race: Where Things Stand With Less Than a Month to Go Questions 1. What types of voters are (hint: demographics) are expected to turn out for this off year election in VA and why does this matter for the candidates The gubernatorial electorate will likely be older, whiter, wealthier and more educated due to the factors that affect individual level voter turnout — older voters are more regular voters, wealthier and more educated people are more likely to vote, and white are older, wealthier and more educated to most other racial/ethnic groups. The types of voters that are expected to turn out for the election in Virginia this year is mostly democratic, since this state is a “seemingly purpleto
