PLEASE don’t answer if you dont know! I really need help!
Researchers are studying two p...
Mathematics, 21.04.2020 23:18 biggasi
PLEASE don’t answer if you dont know! I really need help!
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, 21.06.2019 14:00
Tiara buys the pizza shown below: a circular pizza is shown. the edge of one slice is marked ab. what does the curve ab represent?
Answers: 1
Mathematics, 21.06.2019 14:30
Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference
Answers: 2
Mathematics, 21.06.2019 18:00
What does the relationship between the mean and median reveal about the shape of the data
Answers: 1
Mathematics, 21.06.2019 18:40
2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?
Answers: 1
Mathematics, 22.03.2021 19:10
History, 22.03.2021 19:10
Mathematics, 22.03.2021 19:10
Mathematics, 22.03.2021 19:10
Mathematics, 22.03.2021 19:10
Mathematics, 22.03.2021 19:10
Mathematics, 22.03.2021 19:10
Health, 22.03.2021 19:10