I would like to know the answers for these two if you could just put them in the
ID: 3017670 • Letter: I
Question
I would like to know the answers for these two if you could just put them in the box that would be great...
The Mauna Loa Observatory, located on the island of Hawaii, has been monitoring carbon dioxide levels in the atmosphere since 1958. The table below lists the average annual carbon dioxide levels measured in parts per million (ppm) from 1984 to 2006 Year CO, level (ppm) 1984 1986 1988 1990 1992 1994 1996 1998 344.3 347.0 351.3 354.0 358.9 362.7 366.5 369.4 377.5 380.9 i. Make a scatter plot of the data, using 1958 as year 0 ii. Find and graph the regression line, using C for the level of carbon dioxide and t for the number of years since 1958. Round to the nearest thousandth iii. Use the model to estimate the carbon dioxide level in the atmosphere in 2005. Round to the nearest tenth.Explanation / Answer
So, here's what we gotta do...
I went to xuru.org ----> regression tools ----> linear regression
Then entered coordimates thus :
(26,344.3)
(28,347)
(30,351.3)
(32,354)
(34,356.3)
(36,358.9)
(38,362.7)
(40,366.5)
(42,369.4)
(44,372)
(46,377.5)
(48,380.9)
And got this :
y = 1.632x + 301.356
So, we can write :
C = 1.632t + 301.356 ----> FIRST ANSWER
-----------------------------------------------------------------
2005 would be :
t = 47
C = 1.632(47) + 301.356
378.06 ---> SECOND ANSWER