The file P17_22.xlsx contains the following data on 84 people: annual income, amount invested in the stock market, and a 0-1 variable on whether they subscribe to the Wall Street Journal.

Use logistic regression to classify these people on whether they are subscribers. How accurate are the classifications?

The logistic regression model correctly classifies...................... out of ..................... cases.

Person	Income	InvestAmt	WSJ Subscriber
1	32700	16900	0
2	68500	17500	0
3	66400	26900	0
4	87700	54300	1
5	57800	23400	0
6	60800	33300	0
7	74100	36700	1
8	78200	31900	0
9	67600	37600	1
10	59400	27300	0
11	57600	22200	0
12	87200	51000	0
13	75300	21700	0
14	67400	15900	0
15	90400	21400	0
16	50600	19300	0
17	80200	25400	0
18	43900	12400	0
19	62000	26800	0
20	64500	11800	0
21	90400	57300	1
22	45900	16800	0
23	85100	59800	1
24	92900	42000	0
25	49300	25400	0
26	45100	20300	0
27	86300	25900	0
28	67200	26400	0
29	84700	45000	1
30	88200	65400	1
31	60900	25800	0
32	83500	61300	1
33	79900	42100	0
34	41900	5000	0
35	93700	31300	0
36	83700	55500	1
37	66800	35600	0
38	48700	2300	0
39	54900	21500	0
40	61100	25200	0
41	66900	34400	0
42	86600	37000	0
43	60200	24000	0
44	76400	19800	0
45	83000	23700	0
46	70700	27200	0
47	46700	37700	0
48	84300	49800	1
49	51600	22000	0
50	63200	32500	0
51	81400	57400	1
52	75200	51100	1
53	90900	63800	1
54	59400	22100	0
55	64300	13700	0
56	61800	35100	0
57	68200	12300	0
58	53900	36400	1
59	86600	66600	1
60	59700	14900	0
61	100700	58800	1
62	54100	16700	0
63	64900	48300	1
64	61000	23100	0
65	64300	50100	1
66	67400	46600	1
67	60200	19300	0
68	76000	41900	0
69	72900	39400	1
70	100300	55500	1
71	78900	26500	0
72	89900	46200	0
73	88900	28600	0
74	74800	56000	1
75	86600	56200	1
76	66600	32200	0
77	77800	48500	1
78	90200	62900	1
79	50000	15300	0
80	66200	23800	0
81	88400	34500	0
82	78500	46000	1
83	68000	7100	0
84	77400	64700	1