Question
If xi | fi , i = 1,2,...n is a frequency distribution
with standard deviation 15 and mean 30, the coefficient of variation will be equal to:Solution
The correct answer is D
A person saves 22% of his monthly income. If his monthly is increased by 45% and he still saves the same amount as before then find percentage increase ...
A company has a certain number of employees. Initially, 60% of the employees were assigned to the research department, 20% to the marketing department, ...
A gave 40% of amount to B. B gave 60% of amount received from A to C. If amount received by C from B is Rs.288, then find the amount received by B from A.
- A company manufactured 20000 units where 30% of the units were mobile phones and the remaining units were accessories. If 85% of the mobile phones manufact...
Out of 840 students in a college, the proportion of boys to girls is 3:4. In the midterm exam, 15% of boys and 10% of girls failed. How many students fa...
In a hotel, the monthly usage of Mixed Spices is 8 kg, and the cost per kilogram of Mixed Spices is Rs. 'a'. If the price per kilogram increases byÂ
Sujata allocated 40% of her annual income to a fixed deposit. She then spent 25% of the remaining amount on house rent and 15% on food. After these expe...
- In a school consisting of 750 students, the ratio of boys to girls is 3:2. If 14% of the boys and 10% of the girls failed in the semester exam, how many st...
Z spends 60% of his salary and saves the remaining. After his salary is increased by 30%, he saves 55% of the increased amount besides the amount he use...
Arun saves 30% of his salary while Gagan saves 32%. If both get the same salary and Gagan saves Rs. 1600, find the savings of Arun?
