Mathematics, 09.10.2019 19:00, Becky81
Emissions of sulfur dioxide by industry set off chemical changes in the atmosphere that result in "acid rain." the acidity of liquids is measured by ph on a scale of 0 to 14. distilled water has ph 7.0, and lower ph values indicate acidity. normal rain is somewhat acidic, so acid rain is sometimes defined as rainfall with a ph below 5.0. a sample of 105 rainwater specimens had mean ph 5.43; standard deviation 0.54; and five‑number summary 4.33, 5.05, 5.44, 5.79, 6.81. (a) compare the mean and median and also the distances of the two quartiles from the median.
Answers: 3
Mathematics, 21.06.2019 13:00, anamaliiow
The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?
Answers: 2
Mathematics, 21.06.2019 21:20, madisontrosclair2
Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)
Answers: 3
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