we estimated a 95% confidence interval for the population mean of variable Y using the sample evidence organized under Y_Samp variable (with 125 observation). we will be estimating a 99% confidence interval for the same parameter.

Question 1

Given the sample evidence as organized under Y_Samp, we are 99% confident that the mean for the population of observations in Y is greater than: (Round your answer to two decimal points).

Question 2

Given the sample evidence as organized under Y_Samp, we are 99% confident that the mean for the population of observations in Y is less than: (Round your answer to two decimal points).

Question 3 In its absolute value, what is the critical value that you used for this estimation? Round your answer to two decimal points.

Obs.	Y_Samp
1	72.61
2	97.45
3	68.01
4	79.35
5	65.33
6	75.20
7	77.76
8	68.16
9	75.08
10	76.83
11	78.40
12	74.33
13	77.71
14	81.17
15	76.15
16	82.02
17	80.00
18	90.03
19	78.96
20	64.04
21	76.00
22	73.13
23	66.99
24	86.64
25	81.99
26	79.06
27	75.97
28	71.02
29	73.78
30	70.11
31	66.58
32	76.57
33	87.54
34	86.43
35	63.82
36	82.19
37	73.29
38	76.97
39	61.35
40	63.35
41	78.11
42	68.13
43	72.65
44	88.85
45	83.93
46	85.11
47	85.50
48	80.05
49	68.36
50	77.55
51	87.08
52	87.05
53	77.83
54	63.78
55	77.48
56	84.89
57	74.64
58	82.83
59	72.97
60	60.29
61	58.04
62	74.05
63	74.04
64	75.89
65	58.94
66	86.25
67	57.09
68	73.30
69	71.76
70	86.70
71	72.01
72	70.13
73	78.81
74	89.07
75	73.56
76	88.00
77	78.79
78	76.87
79	71.05
80	82.83
81	79.20
82	84.02
83	68.02
84	78.93
85	69.14
86	72.83
87	63.95
88	83.16
89	86.90
90	75.90
91	81.86
92	79.09
93	81.49
94	98.78
95	77.92
96	74.04
97	86.98
98	79.05
99	76.48
100	85.10
101	86.98
102	80.59
103	79.66
104	75.08
105	78.22
106	75.99
107	64.66
108	65.11
109	82.06
110	65.20
111	64.74
112	75.97
113	80.69
114	60.84
115	82.59
116	62.93
117	76.09
118	78.01
119	82.60
120	59.74
121	73.60
122	83.26
123	62.92
124	77.37
125	83.43