Mathematics, 21.04.2020 07:20 juan1216av
Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the
accuracy and completeness of your results and explanations.
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: 1
Mathematics, 20.06.2019 18:04, qdogisbeast7662
You have two cards with a sum of -12 in both hands. a. what two cards could you have? b. you add two more cards to your hand, but the total sum if the cards remains the same, (-12).
Answers: 1
Mathematics, 21.06.2019 19:30, kelseybell2707
If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
Answers: 1
Mathematics, 22.06.2019 00:30, vannybelly83
Can someone me and explain..will award brainlest!
Answers: 2
Show all your work. Indicate clearly the methods you use, because you will be scored on the correctn...
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