Acoin mint has a specification that a particular coin has a mean weight of 2.5 g. a sample of 34 coins was collected. those coins have a mean weight of 2.49607 g and a standard deviation of 0.01633 g. use a 0.05 significance level to test the claim that this sample is from a population with a mean weight equal to 2.5 g. do the coins appear to conform to the specifications of the coin mint?

Mercury poisoning is dangerous overload of mercury within the body. a major source of mercury within the body, a major source of mercury poisoning is consuming fish that contain mercury. certain fish are more prone to having higher levels of mercury than others. the pie chart shows the distribution of four breeds of fish at a hatchery. the hatchery has approximately 6,000 fish. a biologist from the centers for disease control and prevention randomly test 5% of each breed of fish for mercury content. her findings are shown in the following table. based on the biologist's findings, if a single salmon is randomly selected from those that were tested, what is the probability that this particular fish would have a dangerous mercury level? a) 0.001 b) 0.004 c) 0.02 d) 0.08

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost