45) Value of 40 241
А) 0
ОООО
С) 40
D) 41
Answers
Step-by-step explanation:
For 100 observations following table was prepared
Class 0−10 10−20 20−30 30−40 40−50
f
i
8 30 b c d
If median of the distribution is 23, then the value of b will be?
Q2
Table 1
Marks Frequency Cumulative Frequency
0-10 2 2
10-20 8 10
20-30 12 22
30-40 18 40
40-50 28 68
50-60 22 90
60-70
70-80 6
4 96
100
Table 2
Class (marks ) Frequency
11-15 2
16-20 3
21-25 3
26-30 5
31-35 6
36-40 6
41-45 3
46-50 2
Total 30
Table 3
Time (in min) Frequency
15 7
20 15
25 17
30 3
35 14
40 2
Table 4
31 42 49 25 29
40 36 24 29 30
40 46 38 34 26
24 22 39 40 21
Find which table is an example of grouped frequency distribution.
Q3
For the synthesis of ammonia at 300 K:N
2
(g)+3H
2
(g)→2NH
3
(g)
Calculate the value of the ΔG
0
in Kcal and give your answer in magnitude by using the following data:
N
2
H
2
NH
3
ΔH
f
0
(kcal/mole) 0 0 -10
S
0
(Cal/K−mole) 40 30 45