12th Standard Syllabus & Materials
12th Standard
TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின் - வணிக பாதுகாப்பு அமைப்புகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A
Published on: 09/11/2020
12th Standard Business Maths Probability Distributions English Medium Free Online Test One Mark Questions with Answer Key 2020 - 2021
Download Tamil Nadu 12th Standard Business Maths and Statistics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Business Maths and Statistics Test
1.
The sum of the mean and variance of a binomial distribution for 6 trial is 2.16. Then p = _______
0.4
0.6
0.8
0.2
2.
The variance of a binomial distribution is ___________
equal to its mean
less than its mean
greater than its mean
none
3.
If the mean of the binomial distribution is 25, then its standard deviation lies in the interval ___________
[0,5)
(0,5]
[0,25]
(0,25]
4.
In a binomial distribution if the mean is 8 and the variance is 6, then the number of trials is ___________
32
48
16
12
5.
If P(Z > z) = 0.8508 what is the value of z (z has a standard normal distribution)?
–0.48
0.48
-1.04
1.04
6.
The starting annual salaries of newly qualified chartered accountants (CA’s) in South Africa follow a normal distribution with a mean of Rs.180,000 and a standard deviation of Rs. 10,000. What is the probability that a randomly selected newly qualified CA will earn between Rs. 165,000 and Rs. 175,000 per annum?
0.819
0.242
0.286
0.533
7.
Which of the following cannot generate a Poisson distribution?
The number of telephone calls received in a ten-minute interval
The number of customers arriving at a petrol station
The number of bacteria found in a cubic feet of soil
The number of misprints per page
8.
If for a binomial distribution b(n,p) mean = 4 and variance = 4/3, the probability, P(X ≥ 5) is equal to ________.
(2/3)6
(2/3)5(1/3)
(1/3)6
4(2/3)6
9.
A manufacturer produces switches and experiences that 2 per cent switches are defective. The probability that in a box of 50 switches, there are atmost two defective is ________.
2.5 e-1
e-1
2e-1
none of the above
10.
If X ~ N(9,81) the standard normal variate Z will be ________.
\(Z=\frac { X- 81 }{ 9 } \)
\(Z=\frac { X-9 }{ 81 } \)
\(Z=\frac { X-9 }{ 9 } \)
\(Z=\frac { 9-X }{ 9 } \)
1.
(d)
0.2
2.
(b)
less than its mean
3.
(a)
[0,5)
4.
(a)
32
5.
(c)
-1.04
6.
(b)
0.242
7.
(b)
The number of customers arriving at a petrol station
8.
(d)
4(2/3)6
9.
(a)
2.5 e-1
10.
(c)
\(Z=\frac { X-9 }{ 9 } \)
12th Standard Syllabus & Materials
12th Standard
TN 12th Computer Applications களப்பெயர் முறைமை (DNS) Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications வலையமைப்பு எடுத்துக்காட்டுகள் மற்றும் நெறிமுறைகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications கணினி வலையமைப்பு ஓர் அறிமுகம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications PHP-உடன் MySQL-ஐ இணைத்தல் Sample Question Papers Study Material - QB365 Set A
Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
English
French
Tamilnadu Stateboard Standards
