Question
For the variables X and Y, we collect 4 observations
with ∑ X = 10,∑ Y = 14,∑ X2 = 30,∑ Y2 = 54,∑ XY = 31 The regression line y on x isSolution
The correct answer is D
The ratio of the sums invested by ‘X’ and ‘Y’ in SIP ‘M’ and ‘N’ is 7:4, respectively. If ‘X’ invested Rs. 6300 more than ‘Y’, t...
If certain sum of amount becomes Rs. 9024 in 12 years and Rs. 13536 in 24 years at a certain rate of compound interest, compounded annually then find th...
- The total amount received on a certain sum of money at the rate of interest of 15% per annum compound interest after 3 years is Rs. 36501. What was the pri...
- Anil borrowed Rs. 7,200 at simple interest of 15% p.a. and Rs. 8,400 at simple interest of 12% p.a. The total interest he paid after ‘y’ years is Rs. 8...
Rajat invested Rs. (P-100) on compound interest at the rate of ‘R’ % per annum compounded annually. Ravi invested Rs. (P+300) on simple interest at ...
A certain sum becomes triple in 8 years at simple interest. Find the rate of interest.
If the ratio of the sum invested and simple interest received after 1 year is 25:16 respectively, then find the rate of interest.
After how many years, Rs. 4400 will become 5324 at the rate of 10% p.a., compounded annually?
A certain amount becomes four times itself when invested at r% per annum simple interest for 12 years. What is the value of r?
A certain sum of money invested at a rate of 48% p.a. amounts to Rs. 20736 at the end of 15 months if the rate of interest is compounded 5 monthly. Find...
