subject
Mathematics, 23.04.2020 18:28 jasminetaylor4587

A river runs through a certain city and divides the city into two parts, west and east. The population proportion of residents in the west who are in favor of building a new bridge across the river is known to be pW=0.30. The population proportion of residents in the east who are in favor of building a new bridge across the river is known to be pE=0.20. Two random samples of city residents of size 50, one sample from the west and one sample from the east, were taken to investigate opinions on the bridge, where pˆW=0.38 and pˆE=0.25 represent the sample proportions. For samples of size 50 from each population, which of the following is the best interpretation of the mean of the sampling distribution of the difference in the sample proportions (west minus east) of residents from the west and east who are in favor of building the bridge?A. For all random samples of size 50 residents from both populations, the difference between the sample proportion of residents from the west and the sample proportion of residents from the east will be 0.10.B. For all random samples of size 50 residents from both populations, the difference between the sample proportion of residents from the west and the sample proportion of residents from the east will be 0.13.C. The mean of the difference of all sample proportions from all random samples of 50 residents from each side of the river is equal to 0.10.D. The mean of the difference of all sample proportions from all random samples of 50 from each side of the river is equal to 0.13.E. The probability that the mean of the distribution of the difference between the sample proportion of residents from the west and the sample proportion of residents from the east is greater than 0 is equal to 0.10.

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 17:30, lexusdixon3
Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.
Answers: 3
image
Mathematics, 21.06.2019 20:00, Kalle91106
Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a
Answers: 1
image
Mathematics, 21.06.2019 21:30, barb4you67
Hey hotel charges guests $19.75 a day to rent five video games at this rate which expression can be used to determine the charge for renting nine video games for one day at this hotel? pls
Answers: 1
image
Mathematics, 21.06.2019 22:30, imanim3851
If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?
Answers: 3
You know the right answer?
A river runs through a certain city and divides the city into two parts, west and east. The populati...

Questions in other subjects: