Homework Answers
a)
No, this is not random sampling because, only people walking on the street would be belonging to a region. This will have a bias in the data as some of the properties of the people would be same.
b)
Yes, this is a random sampling as there is equal probability of each individual being selected for the lucky draw (1/50).
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Please answer question 3.
Question 3 (4 marks) Do you think a survey conducted on the...
This is a Statistics question. Please explain your answer. A company conducted a marketing survey of...
This is a Statistics question. Please explain your answer. A company conducted a marketing survey of college students and found that 153 own a bicycle and 85 owned a car. If 22 of those surveyed own both a car and a bicycle, how many interviewed have a car or a bicycle?
please help with work and answer! ct Question 1 0/3 pts A study conducted at a...
please help with work and answer!
ct Question 1 0/3 pts A study conducted at a certain college shows that 57% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that among 9 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating. Round your answer to nearest ten-thousandth. 0.9994 rrect Question 2 0/3 pts A sample of 4 different...
Question 2 (15 marks What motivates small firms to export their products? To answer this question,...
Question 2 (15 marks What motivates small firms to export their products? To answer this question, a professor in CityU conducted a survey of 137 exporting firms. Firm CEOs were asked to respond to the statement "Management believes that the firm can achieve economies of scale by exporting." on a scale of 1 (strongly disagree) to 5 (strongly agree). Summary statistics for the n 137 scale scores were reported as: X 3.85 and S 1.5. In the journal article, the...
Please give the text answer do not with hand writing, Thanks Question 2 (4 marks) Part...
Please give the text answer do not with hand writing, Thanks
Question 2 (4 marks) Part a) A sample of n-25 observations is drawn from a normal population with μ-100 and o-20. Find the following. i) P(X<96) ii) P(96-X-105) Part b) The amount of time the university professors devote to their jobs per week is normally distributed with a mean of 52 hours and a standard deviation of 6 hours. i) What is the probability that a professor works for...
Question 5. 111 marks] (Chapter 2] Consider the following studies Study 1: A study was conducted...
Question 5. 111 marks] (Chapter 2] Consider the following studies Study 1: A study was conducted to see if music can influence people's ability to remember Memory was tested by giving people a series of pictures to look at for 10 minutes and then asking them to answer a series of questions about the pictures. A memory score computed based on their answers. 120 people were recruited and randomly allocated to one of 4 groups: the first group did the...
Question 5. [11 marks] IChapter 2] Consider the following studies: Study 1: A study was conducted...
Question 5. [11 marks] IChapter 2] Consider the following studies: Study 1: A study was conducted to see if music can influence people's ability to remember. Memory was tested by giving people a series of pictures to look at for 10 minutes and then asking them to answer a series of questions about the pictures. A memory score was computed based on their answers. 120 people were recruited and randomly allocated to one of 4 groups: the first group did...
can I get some help please? Problem 2. "Do you think we are prepared for another...
can I get some help please?
Problem 2. "Do you think we are prepared for another terrorist attack?" Public opinion pollsters report the results of such poll questions as the proportion who respond affirmatively (ie, they say YES) and a "margin of error." By "margin of error," they mean the quantity that is added to, and subtracted from, the point estimate to get the upper and lower confidence limits. Suppose that you work for such a pollster, and that you...
can you please answer all three questions. Thank you so much!! QUESTION 3: What is the...
can you please answer all three questions. Thank you so
much!!
QUESTION 3: What is the purpose of the Tris-Acetate-EDTA (TAE) buffer that the agarose gel is prepared with and submerged in for running? What would happen if you used water to prepare and run the gel instead of TAE buffer? (You should conduct an internet search to answer this question) [2 marks] QUESTION 1: Several factors (including agarose gel concentration, time and current) affect migration of DNA fragments through...
Answer in order please thank you. Question1 A survey was conducted from a random sample of...
Answer in order please thank you.
Question1 A survey was conducted from a random sample of 8225 Americans, and one Selecd variable that was recorded for each participant was their answer to the question, "How old are you?" 1o points The mean of this data was found to be 42, while the median was 37. What does this tell you about the shape of this distribution? A. O It is symmetric. B. O It is skewed left. C. There is...
I want answer those question, please help me.
1. Short answer only.a. Suppose that we tell you that we flipped a coin multiple times and it landed heads 75% of the time. Would you be reasonably convinced that this was not a fair coin (where “fair” means that the coin has a .5 probability of landing “heads”)? If so, explain why. If not, describe what additional information you would ask for and explain why it is necessary.b. A college professor asked students in his class to report how...
please help with work and answer!
ct Question 1 0/3 pts A study conducted at a certain college shows that 57% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that among 9 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating. Round your answer to nearest ten-thousandth. 0.9994 rrect Question 2 0/3 pts A sample of 4 different...
Question 2 (15 marks What motivates small firms to export their products? To answer this question, a professor in CityU conducted a survey of 137 exporting firms. Firm CEOs were asked to respond to the statement "Management believes that the firm can achieve economies of scale by exporting." on a scale of 1 (strongly disagree) to 5 (strongly agree). Summary statistics for the n 137 scale scores were reported as: X 3.85 and S 1.5. In the journal article, the...
Please give the text answer do not with hand writing, Thanks
Question 2 (4 marks) Part a) A sample of n-25 observations is drawn from a normal population with μ-100 and o-20. Find the following. i) P(X<96) ii) P(96-X-105) Part b) The amount of time the university professors devote to their jobs per week is normally distributed with a mean of 52 hours and a standard deviation of 6 hours. i) What is the probability that a professor works for...
Question 5. 111 marks] (Chapter 2] Consider the following studies Study 1: A study was conducted to see if music can influence people's ability to remember Memory was tested by giving people a series of pictures to look at for 10 minutes and then asking them to answer a series of questions about the pictures. A memory score computed based on their answers. 120 people were recruited and randomly allocated to one of 4 groups: the first group did the...
Question 5. [11 marks] IChapter 2] Consider the following studies: Study 1: A study was conducted to see if music can influence people's ability to remember. Memory was tested by giving people a series of pictures to look at for 10 minutes and then asking them to answer a series of questions about the pictures. A memory score was computed based on their answers. 120 people were recruited and randomly allocated to one of 4 groups: the first group did...
can I get some help please?
Problem 2. "Do you think we are prepared for another terrorist attack?" Public opinion pollsters report the results of such poll questions as the proportion who respond affirmatively (ie, they say YES) and a "margin of error." By "margin of error," they mean the quantity that is added to, and subtracted from, the point estimate to get the upper and lower confidence limits. Suppose that you work for such a pollster, and that you...
can you please answer all three questions. Thank you so
much!!
QUESTION 3: What is the purpose of the Tris-Acetate-EDTA (TAE) buffer that the agarose gel is prepared with and submerged in for running? What would happen if you used water to prepare and run the gel instead of TAE buffer? (You should conduct an internet search to answer this question) [2 marks] QUESTION 1: Several factors (including agarose gel concentration, time and current) affect migration of DNA fragments through...
Answer in order please thank you.
Question1 A survey was conducted from a random sample of 8225 Americans, and one Selecd variable that was recorded for each participant was their answer to the question, "How old are you?" 1o points The mean of this data was found to be 42, while the median was 37. What does this tell you about the shape of this distribution? A. O It is symmetric. B. O It is skewed left. C. There is...
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