From 1 July to 31 July (use of multiple variables for analytics): Determine the estimated multiple linear regression equation (independent variables:-daily new coronavirus, daily tests, and death). Use the t-test to determine the significance of each independent variables. What is the conclusion for each test at the 0.05 level of significance? Remove all independent variables that are not significant at the 0.05 level of significances from the estimated regression equation. What is your recommended estimated regression equation in the month of July?

Date	Day	cases	Death	Daily tests
01-Jul	1	76	0	20,682
02-Jul	2	73	0	26,320
03-Jul	3	62	0	24,430
04-Jul	4	100	0	25,553
05-Jul	5	68	0	21,597
06-Jul	6	98	2	24,528
07-Jul	7	168	0	26,554
08-Jul	8	122	0	29,424
09-Jul	9	149	0	21,785
10-Jul	10	143	0	37,588
11-Jul	11	290	1	27,169
12-Jul	12	256	1	30,195
13-Jul	13	167	0	22,943
14-Jul	14	248	2	21,995
15-Jul	15	218	1	27,040
16-Jul	16	295	2	28,607
17-Jul	17	379	3	24,409
18-Jul	18	211	3	28,104
19-Jul	19	337	3	26,674
20-Jul	20	262	1	26,588
21-Jul	21	341	3	29,464
22-Jul	22	436	2	24,726
23-Jul	23	374	5	27,151
24-Jul	24	287	7	24,118
25-Jul	25	333	5	20,313
26-Jul	26	408	10	42,973
27-Jul	27	492	6	17,588
28-Jul	28	358	6	18,521
29-Jul	29	274	9	18,077
30-Jul	30	626	13	19,921
31-Jul	31	549	8	33,826