Mathematics, 30.06.2019 05:10 KassandraVillegas
Dreaming in black and white a study was conducted to determine the proportion of people who dream in black and white instead of color. among 306 people over the age of 55, 68 dream in black and white, and among 298 people under the age of 25, 13 dream in black and white (based on data from “do we dream in color? ” by eva murzyn, consciousness and cognition, vol. 17, no. 4). we want to use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion of those under 25. a. test the claim using a hypothesis test. b. test the claim by constructing an appropriate confidence interval.
Answers: 1
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The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.
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Dreaming in black and white a study was conducted to determine the proportion of people who dream in...
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