Advertisements
Advertisements
प्रश्न
A coin is tossed 800 times and the outcomes were noted as: Head:415 ,Tail:385
Find the probabiity of the min showing up (i)a head ,(ii) a tai .
उत्तर
As the coin is tossed 800 times , the total number of trials is 800. Let E1 and E2 be the events of the coin coming up with a head and a tail respectively .
The number of times E1 occurs = 415 and the number of times E2 occurs = 385
`therefore "P"("E"_1) = 415/800 = 83/160` , and
`"P"("E"_2) = 385/800 = 77/160`
APPEARS IN
संबंधित प्रश्न
Find the class mark of the class 35 - 39.
In the Fig. below, JKLM is a square with sides of length 6 units. Points A and B are the
mid- points of sides KL and LM respectively. If a point is selected at random from the
interior of the square. What is the probability that the point will be chosen from the interior of ΔJAB?
Cards numbered from 11 to 60 are kept in a box. If a card is drawn at random from the box, find the probability that the number on the drawn card is divisible by 5
Red queens and black jacks are removed from a pack of 52 playing cards. A card is drawn at random from the remaining cards, after reshuffling them. Find the probability that the card drawn is a king
A bag contains 4 white balls, 5 red balls, 2 black balls and 4 green balls. A ball is drawn at random from the bag. Find the probability that it is red or white.
If A = {1, 2, 3, 4, 5} and B = {1, 3, 7}, then A ∩ B = ?
A coin is tossed twice. Find the probability of getting: two tails
A bag contains 3 white, 5 black and 2 red balls, all of the same shape and size. A ball is drawn from the bag without looking into it, find the probability that the ball drawn is a black ball.
Two dice are rolled, find the probability that the sum is equal to 1
Three coins are tossed simultaneously. What is the probability of getting at least one head?
