Math Is Fun Forum

MKNB

Guest

Probability

Explain these question
b)         In the following frequency distribution 'x' shows the number of machine breakdowns and 'f'  shows the frequency of occurrence of 'x'.Construct the probability distribution from the following data.
x    0  1  2    3    4   5   6  7  8  9 
f     5  8  9  11  14  10  7  4  3  1

Also find probability
1)  X>6
2)  X<3
3)  X>7
STEP BY STEP.
https://www.mathisfunforum.com/viewtopic.php?id=24927

a)It is noticed that 70% of certain population of student like to wear jeans. A random sample of ten of those student is chosen. What is probability that no
       one wear jeans. 
in two posts you give two different answers 0.3 and 3
https://www.mathisfunforum.com/viewtopic.php?id=24933
https://www.mathisfunforum.com/viewtopic.php?id=24932

Question : Four coins are tossed simultaneously . What is  the probability distribution for number of heads. (Complete distribution)

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,855

Re: Probability

Hi,

Please see the post fully. It says
a) Required probability =

students out of 10 students.

As already explained, both Illustration 1 and
Illustration 2 are one and the same.

---

It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.