NEED HELP question :

Refer to the above Participation of State Park Users table. What percent of the survey population is between the ages of 18 and 45 and participates in camping? Round your answer to the
nearest tenth.

•18%
•22%
•15%
•19%

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

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.

Which of the following parabolas opens up?