The following table gives life time of 400 neon lamps:
A bulb is selected at random. Find the probability of that the life time of the selected bulb is atleast 800 hours.

The following table gives life time of 400 neon lamps: A bulb is selected at random. Find the probability of that the life time of the selected bulb is less than 500 hours.

The following table gives life time of 400 neon lamps: A bulb is selected at random. Find the probability of that the life time of the selected bulb is between 400 to 900 hours.

The following table gives the life times of 400 neon lamps : : How many lamps have a life time of more than 700 hours ?

The following table gives the life times of 400 neon lamps : : Represent the given information with the help of a histogram.

The following table gives the distribution of the life time of 400 neon lamps : Find the median life time of a lamp.

Marks obtained by 2500 students are shown in the following table: A student is selected at random. Find the probability that : he scores less than 60% marks.

Marks obtained by 2500 students are shown in the following table: A student is selected at random. Find the probability that : he scores more than 80% marks.

A die is numbered in such a way that its faces show the numbers 1, 2, 2, 3, 3, 6. It is thrown two times and the total score in two throws is noted. Complete the following table which gives a few values of the total score on the two throws : : What is the probability that the total score is : at least 6 ?

Coloured balls are distributed in three bags as shown in the following table: A bag is selected at random and then two balls are randomly drawn from the selected bag. They happen to be black and red. Find the probability that they come from bag I?