Which of the following random variables is geometric? The number of digits in a randomly selected row until a 7 is found. The number of 7s in a row of 50 random digits. The number of tails when a coin is tossed 50 times. The number of diamond cards obtained in a seven-card deal-out of a shuffled deck of 52 cards. The number of 2s when rolling a die 5 times.

Question

Curtis Marquez

Mathematics

28 June, 14:08

Which of the following random variables is geometric? The number of digits in a randomly selected row until a 7 is found. The number of 7s in a row of 50 random digits. The number of tails when a coin is tossed 50 times. The number of diamond cards obtained in a seven-card deal-out of a shuffled deck of 52 cards. The number of 2s when rolling a die 5 times.

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Answers (1)

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April · Answer 1

The number of digits in a randomly selected row until a 7 is found.

Step-by-step explanation:

A geometric distribution models the number of trials needed to obtain the first success.

The first option counts the number of digits until a 7 is found. Therefore, it is geometric.