Showing posts from February, 2014

Facts are not allowed in Wikipedia

In Wikipedia (as of February 28, 2014), the entry on psychic Eileen Garrett includes the following: Garrett took part in "clairvoyance" tests. One of the tests was organised by Joseph Rhine at Duke University in 1933 which involved cards with certain symbols that were placed in a sealed envelope and participants were asked to guess their contents. Garrett scored 2,433 correct hits in 10,900 cards .  She performed poorly and later criticised the tests by claiming that the cards lacked a psychic energy called "energy stimulus" and that she could not perform clairvoyance to order. J. B. Rhine's ESP experiments involved the use of card decks with 5 symbols, so the probability of a correct guess was 1 in 5 or 0.2. That means with 10,900 cards guessed the chance expected number of correct guesses was 2,180. The exact cumulative binomial probability of Garrett's 2,433 hits out of 10,900 guesses in a standard ESP card test is associated with a probability of p