Question: In performing research on extrasensory perception researchers sometimes place two
In performing research on extrasensory perception, researchers sometimes place two individuals in different locations, then have person A (the “sender”) view each item in a series of stimuli while person B (the “receiver”) tries to correctly identify the image person A is viewing. In carrying out such a study, a researcher enlists the help of Amy and Donald as volunteers to “send” and “receive,” respectively. The researcher randomly shows Amy one of two pictures—either a sunny sky or a stormy sky—and this procedure is carried out for a total of 200 exposures at 20-second intervals. If Donald is simply guessing, he will tend to be correct 50% of the time. In this particular study, Donald was successful in 108 out of 200 attempts to identify which picture Amy was viewing. If someone has absolutely no extrasensory capabilities and is simply guessing, what is the probability of guessing correctly on at least 108 out of 200 attempts? Given the probability you’ve calculated, would you suggest that Donald drop his plan to list himself in the yellow pages as a psychic phenomenon?
Answer to relevant QuestionsA lighting vendor has described its incandescent bulbs as having normally distributed lifetimes with a mean of 2000 hours and a standard deviation of 100 hours. The vendor is faced with an especially demanding industrial ...For a random variable that is normally distributed, with μ = 80 and σ = 10, determine the probability that a simple random sample of 25 items will have a mean that is a. Greater than 78. b. Between 79 and 85. c. Less than ...To gain information about competitors’ products, companies sometimes employ “reverse engineering,” which consists of buying the competitor’s product, then taking it apart and examining the parts in great detail. ...To avoid losing part of their federal highway fund allocation, state safety administrators must ensure that interstate speed limits are adequately enforced within their state. In an upcoming test, federal researchers will be ...One of the most popular products sold by a manufacturer of electrical fuses is the standard 30-ampere fuse used by electrical contractors in the construction industry. The company has tested a simple random sample of 16 ...
Post your question