1.You decide to visit your nitrate data from wells in Santa Clara Valley.You decide to compare the nitrate concentrations in the two wells using confidence intervals.You suspect that the people drinking water from Well 24 will be exposed to a higher mean nitrate concentration than people drinking water from Well 30. Use confidence intervals to make this comparison. (Data attached below, in Copy-Paste format.)

Copy-Paste format:

Well 24 Well 3011.1 2259.4 2319 2744 3252 2646 1943 2249 3141 2744 3240 1335 2679 2035 1143 1243 2240 2427 1448 1742 52 44 45 44 44 51 49 52 45 44 51 51 48 52 43 43 45 46 46 47 51 51 47 41 38 49 50 39 47 52 38 14 45 47 37 40 33 35 31 36 32 51 46 42 44 42 42 41 38 40 39 42 38 35 39 22 39 44 43 42 43 43 39 39 38 37 38 39 23 23 38 37 35 24 17 35 26 17 16 16 36 38 31 41 39 15 37 37 39 34 36 38 38 38 36 35 36 36 37 39 38 38 36 37 36 35 36 37 38 36 40 35 37 35 35 35 35 34 33 35 35 34 34 39 35 36 33 35 38 36 37 36 37 36 38 36 35 36 36 36 34 36 37 35 27 37 38 37 36 39 38 37 35 34 41 36 40 35 35 37 37 36 35 35 37 35 33 34 34 34 34 33 32 34 35 37 35 35 37 36 34 36 41 36 35 39 37 40 38 39 38 38 24 39 38 42 42 42 46 42 40 43 41 41 40 40 40 41 40 39 39 36 73 36 38 36 35 39 38 41 39 44 40 39 35 34 36 40 35 41 39 34 38 37 38 23 37 38 39 41 40 35 40 37 40 36 35 37 36 44 30 36 30 31 27 6.3 27 33 30 31 33 33 35 35 36 37 33 33 34 33 36 35 37 31 33 30 35 37 37 41 34 34 35 38 33 35 32 35 35 34 36 36 36 33 39 38 30 34 38 39 34 33 33 33 34 34 33 35 36 36 35 35 33 33 33 33 34 25 34 36 33 32 32 31 31 33 33 33 33 31 34 36 37 32 34 34 33 33 35 35 34 34 34 35 33 33 37 36 34 35 34 34 35 34 36 34 34 36 32 36 31 32 31 30 31 30 31 32 30 30 30 34 30 29 29 25 31 30 30 30 31 31 34 33 33 32 32 32 31 30 28 30 31 30 36 37 31 33 32 31 30 26 31 31 31 31 32 30 32 31 32 32 32 31 32 32 32 32 32 33 32 33 33 32 31 32 32 32 33 33 30 33 33 33 33 33 30 31 31 31 31 32 31 32 31 31 31 30 30 32 32 31 31 32 30 31 30 31 31 31 30 31 31 32 32 31 32 32 32 33 32 32 32 32 31 31 31 38 32 32 31 32 31 31 31 29 30 31 31 31 31 31 31 32 31 31 30 30 29 29 33 32 32 33 33 34 33 33 33 34 34 33 33 34 33 33 34 33 34 34 33 34 34 34 34 34 33 33 33 33 32 32 30 31 32 31 31 31 33 33 32 31 32 31 31 31 32 31 32 32 30 31 31 32 32 30 30 30 31 31 30 32 30 30 29 29 31 30 30 30 30 30 29 29 30 30 32 29 31 30 30 30 31 32 32 32 32 32 31 32 31 31 32 31 32 31 32 34 33 30 30 31 32 31 31 31 31 30 31 31 31 31 32 31 32 31 37 29 30 30 32 30 33 33 32 32 30 30 31 31 33 32 32 31 31 32 32 31 33 33 32 32 32 30 32 32 32 31 30 33 37 35 34 34 34 34 32 32 35 33 

2.In this problem, you'll compare two proportions.You decide to visit the data from the 2019 EIB survey.You suspect that the proportion of people in the US who believe that humans are NOT the cause of climate change is less than the proportion in Europe.Use the data and confidence intervals to compare the two proportions. (Data attached below in Image format).

Statement:Humans and human activity are the main cause of climate changetrue or false?

Survey results:

USA Europe N Total 1000 28088 True 685 23558 False 315 4530