1. 2. please answer the above questions for my stats class-- thank you!!
Posted: Wed May 11, 2022 12:55 pm
1.
2.
please answer the above questions for my stats class-- thank
you!!
(1 point) A noted psychic was tested for ESP. The psychic was presented with 200 cards face down and was asked to determine if the card was one of symbols: a star, cross, circle, square, or three wavy lines. The psychic was correct in 49 cases. Let p represent the probability that the psychic correctly identifies the symbol on the card in a random trial. Assume the 200 trials can be treated as an SRS from the population of all guesses. To see if there is evidence that the psychic is doing better than just guessing, we test Ho: p= .2 Ha:p>.2 (a) What is the z-statistic for this test? (b) What is the P-value of the test?
(1 point) An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sample of n = 82 C of I students found 30 with brown eyes. We test H, :p=.45 H:p.45 (a) What is the z-statistic for this test? (b) What is the P-value of the test?
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you!!
(1 point) A noted psychic was tested for ESP. The psychic was presented with 200 cards face down and was asked to determine if the card was one of symbols: a star, cross, circle, square, or three wavy lines. The psychic was correct in 49 cases. Let p represent the probability that the psychic correctly identifies the symbol on the card in a random trial. Assume the 200 trials can be treated as an SRS from the population of all guesses. To see if there is evidence that the psychic is doing better than just guessing, we test Ho: p= .2 Ha:p>.2 (a) What is the z-statistic for this test? (b) What is the P-value of the test?
(1 point) An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sample of n = 82 C of I students found 30 with brown eyes. We test H, :p=.45 H:p.45 (a) What is the z-statistic for this test? (b) What is the P-value of the test?