A researcher wants to test the effectiveness of billboards in increasing HPV vaccination rates. She chooses two cities, one gets the pro-HPV vaccine billboards for 3 months and the other city does not. She collects baseline data on HPV vaccine rates at the beginning of the study and then again at 3 month and compares HPV vaccine rates between the two cities. This is what type of study

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Write the equation in logarithmic form e^x=403.429

Collin did the work to see if 10 is a solution to the equation r/4=2.4