An insurance policy is written to cover a loss x where x has density function f(x) =    3 8 x 2 , 0 ≤ x ≤ 2; 0, otherwise. the time (in hours) to process a claim of size x, where 0 ≤ x ≤ 2, is uniformly distributed on the interval from x to 2x. calculate the probability that a randomly chosen claim on this policy is processed in three hours or more.

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

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Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap