15) A coorperation bank has two branches emplying
50 and 70
Workers
respectively. The average
salaries paid
paid by
two respective branches
rs 360
and
rs 390 per month. Calculate
the meon
of the salaries of the employees
Answers
Answer:
252.8
Description for Correct answer:
Total salary of the first company = number of employees × arithmetic mean
=100×275=27500
Total salary of the second company
=80×225
=Rs.18,000
∴Required A.M.=27500+18000180
=45500180≈252.8
Part of solved Aptitude questions and answers : >> Aptitude
Login to Bookmark
Previous Question
Next Question
Report Error
Comments
No comments available
Add your comments here...
Login to post comment
Similar Questions
1). Which of the following statements is not true?
A). E(XY)=E(X)E(Y)
B). E(X+Y)=E(X)+E(Y)
C). E{E(X|Y)}=E(X)
D). If X and Y are independent, then the correlation coefficient is zero-- View Answer
2). If X and Y are two independent random variables, then covariance between them is
A). V(X) V(Y)
B). V(XY)
C). E(X) E(Y)
D). 0-- View Answer
3). Correlation coefficient between x and y lies in the interval
A). [0,1]
B). [−1,0]
C). [−1,1]
D). [1,∞]-- View Answer
4). To measure flatness or peakedness of a distribution we use
A). Skewness
B). Kurtosis
C). Correlation
D). Standard deviation-- View Answer
5). The correlation coefficient is
A). harmonic mean, between two regression coefficients
B). geometric mean between two regression coefficients
C). arithmetic mean between two regressioa coefficients
D). product of the two regression coefficients
-- View Answer
6). If E1,E2,E3 are three mutually exclusive events, then P(E1∪E2∪E3) is
A). P(E1)P(E2)P(E3)
B). P(E1)+P(E2)+P(E3)
C). P(E1)+P(E2)+P(E3)−P(E1∪E2)−P(E2∪E3)
D). P(E1E2)+P(E2E3)+P(E1E3)-- View Answer
7). The empirical relation between the mean, median and mode is
A). mode = 3 median - 2 mean
B). median = 3 mean - 2 mode
C). mode = 2 median - 3 mean
D). mean = 3 median - 2 mode-- View Answer
8). If r is the correlation co-efficient between two variables x and y and if byx and bxy are the two regression coefficients then
A). r2=byxbxy
B). r2=byx×b(yx)
C). r2=bxybyx
D). r2=1byx×b(yx)-- View Answer
9). A perfect die is thrown twice. The probability of getting a sum 9 is
A). 310
B). 13
C). 19
D). 12-- View Answer
10). The prbability that a leapr year selected random will contain 53 Sundays or Mondays is
A). 47
B). 27
C). (72)2
D). 74-- View Answer
Home About Us Terms and Conditions Privacy Policy Contact us