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Recent questions tagged q7-a

If A and B are mutually exclusive events,$P(A)=0.35$ and $P(B)=0.45$ find P(A')

asked Jul 7, 2014 by sreemathi.v

1 answer

Show that the area included between the $x$-axis and the curve $a^2y=x^2(x+a)$ is $\large\frac{a^2}{12}$.

asked Apr 22, 2013 by sreemathi.v

0 answers

Sketch and shade the area of the region lying in the first quadrant and bound by $y=9x^2,x=0,y=1$ and $y=4$.Find the area of the shaded region.

asked Apr 19, 2013 by sreemathi.v

0 answers

Internal and External assessments were conducted on a group of 10 students who were studying in a post graduate class in a college.The following marks were obtained in the assessments :

asked Apr 17, 2013 by sreemathi.v

0 answers

Calculate Spearman's rank correlation coefficient between the advertisement cost and sales from the following data :

asked Apr 16, 2013 by sreemathi.v

1 answer

Calculate the coefficient of correlation between X and Y from the following data using Karl Pearson's method :

asked Apr 16, 2013 by sreemathi.v

1 answer

The data for marks in Physics and History obtained by ten students are given below :

asked Apr 15, 2013 by sreemathi.v

0 answers

An examination of 8 applicants for a clerical post was taken by a firm.The marks obtained by the applicants in the Reasoning and Aptitude tests are given below :

asked Apr 12, 2013 by sreemathi.v

2 answers

Find the equations of the two lines of regression for the following observations : $(3,6),(4,5),(5,4),(6,3),(7,2).$Find an estimate of $y$ for $x$ =2.5.

asked Apr 12, 2013 by sreemathi.v

0 answers

The following observations are given : $(1,4),(2,8),(3,2),(4,12),(5,10),(16,14),(7,16),(8,6),(9,18)$.Estimate the value of $y$ when the value of $x$ when the value of $y=5$.

asked Apr 11, 2013 by sreemathi.v

0 answers

Ten candidates received percentage marks in two marks in two subjects as follows:

asked Apr 10, 2013 by sreemathi.v

0 answers

The length $x$ of a rectangle is decreasing at the rate of $5\; cm/minute$ and the width y is increasing at the rate of $4\; cm/minute$. When $x = 8$ cm and $y = 6$ cm, find the rates of change of (a) the perimeter

asked Nov 22, 2012 by thanvigandhi_1

1 answer

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