This is on my assessment and I honestly don’t know how to answer and I don’t wanna get a bad grade:/ The box plots at right display the distributions of
maximum speed for 145 roller coasters in the United
States, separated by whether they are wooden
coasters or steel coasters.

a) Which type of coaster has a higher percentage of coasters that go faster than 50 mph?

A. Wooden
B. Steel
C. About the same
D. Cannot be determined
Explain your choice:

B) Which type of coaster has less data points?

A. Wooden
B. Steel
C. About the same
D. Cannot be determined
Explain your choice:

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below.correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance.what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.