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Question
Write a short note on the following:
1 The weekly salaries of a group of employees are given in the following table. Find the mean and standard deviation of the salaries
Salaries (in Rupees)
75
80
85
90
95
100
No. of persons
3
7
18
12
6
4
2 Find the standard deviation of profit of 100 companies-
Profit in crores
8-10
10-12
12-14
14-16
16-18
18-20
Number of companies
16
24
40
60
20
3 Prepare a bar diagram for the following data: India's foreign debt as on 1.4.1980
Source of borrowing
U. S. A
U. S. S. R
U. K.
Japan
Federal Republic of Germany
Amounts of loan (in crores of Rs.)
1,800
1,200
800
600
500
4 Derive the coordinates of the point P, which divides A(x1, y1) and B(x2, y2) internally in the ratio m: n
The perimeter of a rectangular swimming pool is 60m. The length of the pool is 4 m more than the width. What is the width of the pool?
Chelsea has been facing some financial problems which even caused her daily expenses for food, at the same time, she hasn''t receive the money from the bank loan yet. Therefore, sh
A photographer decides to decrease a picture she took in sequence to fit it within a certain frame. She requires the picture to be one-third of the area of the original. If the ori
7a^2+12a-11=0
solutions
Series - Special Series In this part we are going to take a concise look at three special series. In fact, special may not be the correct term. All three have been named th
1. (‡) Prove asymptotic bounds for the following recursion relations. Tighter bounds will receive more marks. You may use the Master Theorem if it applies. 1. C(n) = 3C(n/2) + n
calculates the value of the following limit. Solution Now, notice that if we plug in θ =0 which we will get division by zero & so the function doesn't present at this
2x40 420x4 7x240 84x20 Explain how three expressions are equivalent.
Standardizing a Random Variable If X is a random variable with E(X) = m and V(X) = s 2 , then Y = (X – m)/ s is a random variable with mean 0 and standard deviatio
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