The shadow cast by an object on a sunny day is directly proportional to the height of the object. if a person 78 inches tall casts a shadow 56 inches long, how tall is a tree which casts a shadow 34 feet in length? round to the nearest hundredth if necessary.

Determine if the function below is continuous. a. continuous b. not continuous, 1 hole c. not continuous, > 2 holes d. not continuous, 2 holes

Alogical argument that is presented in graphical form using boxes and arrows is called?

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.