Mathematics, 08.04.2020 04:39 Lesquirrel
During the spring of 1999, many fuel storage facilities in Serbia were destroyed by bombing. As a result, significant quantities of oil products were spilled and burned, resulting in soil pollution. The article "Mobility of Heavy Metals Originating from Bombing of Industrial Sites" (B. Skrbi´c, J. Novakovi´c, and ˘ N. Miljevi´c, Journal of Environmental Science and Health, 2002:7–16) reports measurements of heavy metal concentrations at several industrial sites in June 1999, just after the bombing, and again in March of 2000. At the Smederevo site, on the banks of the Danube River, eight soil specimens taken in 1999 had an average lead concentration (in mg/kg) of 10.7 with a standard deviation of 3.3. Four specimens taken in 2000 had an average lead concentration of 33.8 with a standard deviation of 0.50. Find a 95% confidence interval for the increase in lead concentration between June 1999 and March 2000.
Answers: 2
Mathematics, 21.06.2019 18:50
Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15
Answers: 1
Mathematics, 21.06.2019 21:00
The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?
Answers: 2
Mathematics, 21.06.2019 21:30
Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1
Answers: 2
Mathematics, 21.06.2019 21:30
You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?
Answers: 2
During the spring of 1999, many fuel storage facilities in Serbia were destroyed by bombing. As a re...
Mathematics, 23.02.2021 05:40
Social Studies, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
Physics, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
Chemistry, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
History, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
French, 23.02.2021 05:40
Spanish, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
English, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
Mathematics, 23.02.2021 05:40
Health, 23.02.2021 05:40