Question

Because the Florida manatee population is threatened, the Florida Maatee Sanctuary Act of 1978 was enacted to protect the species. Scientists interested in the relationship between the number of manatee deaths and time collected the data shown in the table. Manatee Deaths 174 163 146 192 201 416 242 232 269 272 325 305 380 276 396 416 Manatee Deaths Year 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 Year 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 25 62 114 84 63 116 114 81 128 119 122 114 133 168 206

Answer 1

Here we have data:

Year	Mantee Deaths
1	7
2	25
3	62
4	114
5	84
6	77
7	63
8	116
9	114
10	81
11	128
12	119
13	122
14	114
15	133
16	168
17	206
18	174
19	163
20	146
21	192
22	201
23	416
24	242
25	232
26	269
27	272
28	325
29	305
30	380
31	276
32	396
33	416

Excel scatter plot output :

a) y = 0.08X + 2.42

b) x = 490

   y = 0.0784 * 490 + 2.4161 = 41