Recent questions tagged Probability

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Q: An urn contains 5 red and 2 black balls.Two balls are randomly drawn.

An urn contains 5 red and 2 black balls.Two balls are randomly drawn. Let X represent the number of black ... a random variable ? Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times.

Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 ... values of X? Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: Find the probability distribution of (i) number of heads in two tosses of a coin.

Find the probability distribution of (i) number of heads in two tosses of a coin. (ii) number of tails in the ... tosses of a coin. Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: Find the probability distribution of the number of successes in two tosses of a die, where a success is defined as

Find the probability distribution of the number of successes in two tosses of a die, where a success is defined as ... at least one die Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: From a lot of 30 bulbs which include 6 defectives, a sample of 4 bulbs is drawn at random with’ replacement.

From a lot of 30 bulbs which include 6 defectives, a sample of 4 bulbs is drawn at random with' replacement ... of defective bulbs. Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: A coin is biased so that the head is 3 times as likely to occur as tail. If the coin is tossed twice,

A coin is biased so that the head is 3 times as likely to occur as tail. If the coin is tossed twice, ... of number of tails. Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: A random variable X has the following probability distribution:

A random variable X has the following probability distribution: x 0 1 2 3 4 5 6 7 P(x) 0 k 2k 2k 3k k2 2k2 7k2 + ... < x < 3) (iv) P(0 Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: The random variable X has a probability distribution P(X) of the following form, where k is some number:

The random variable X has a probability distribution P(X) of the following form, where k is some number: P(X)={ k,ifx= ... ), P (X ≥ 2) Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: Find the mean number of heads in three tosses of a fair coin.

Find the mean number of heads in three tosses of a fair coin. Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance

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Q: Two dice are thrown simultaneously. If X denotes the number of sixes, find the expectation of X.

Two dice are thrown simultaneously. If X denotes the number of sixes, find the expectation of X. Select the correct answer from above options...

asked Nov 25, 2021 in Education by JackTerrance