Mathematics, 21.04.2020 04:57 maskythegamer
Researchers are studying two populations of sea turtles. In population D. 30 percent of the turtles have a shell length greater than 2 feet. In
population E, 20 percent of the turtles have a shell length greater than 2 feet. From a random sample of 40 turtles selected from D, 15 had a
shell length greater than 2 feet. From a random sample of 60 turtles selected from E, 11 had a shell length greater than 2 feet. Let PD
represent the sample proportion for D, and let PE represent the sample proportion for E.
(a) What is the value of the difference PD - PE? Show your work
(b) What are the mean and standard deviation of the sampling distribution of the difference in sample proportions PD - PE? Show your work and label each value.
(c) Can it be assumed that the sampling distribution of the difference of the sample proportions PD - PE is it approximately normal? Justify your answer.
(d) Consider your answer in part (a). What is the probability that PD - PE is greater than the value found in part (a)? Show your work.
Answers: 3
Mathematics, 21.06.2019 18:10
Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12
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Mathematics, 22.06.2019 01:30
Given a binomial distribution variable with n=20 and p=0.60 find the following possibilities using the binomial table a) p(x < 13) b) p x > 15) c) p(x = 17) d) p(11 < x < 14) e) p(11 < x < 14)
Answers: 3
Researchers are studying two populations of sea turtles. In population D. 30 percent of the turtles...
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