A researcher developing scanners to search for hidden weapons at airports has failed to concludefailed to conclude that a new scanner is significantly better than the current scanner. He made his decision based on a test using alpha equals 0.05 .α=0.05. Would he have made the same decision at alpha equals 0.10 question markα=0.10? How about alpha equals 0.01 question markα=0.01? Explain. Select the statement relating decision making to values of alphaα.

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?