The amount of certain trace element in blood is known to vary with a standard deviation of 24.1 ppm (parts per million) for male blood donors and 19.5 ppm foe female donors. Random sample of 85 male and 60 female donors yield concentration means of 28 and 33 ppm respectively. What is the likelihood that the population means of concentrations of the element are significant for men and women?

Alex is the head photographer for the yearbook and the newspaper. she has a large staff of assistant photographers because they need to take pictures at all of the school events. she knows that some of her photographers have better cameras and can take action shots at sporting events, and that some of them are good at taking candid pictures in the hallways. she sets firm deadlines so she has enough time to look through all of the shots and choose the best ones. she gives her photographers constructive feedback to them improve their pictures. respectful enforcer warlord doormat peacemaker

Give 2 examples of the sedimentation in the deep ocean?

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