Homework Answers
17. The correct answer is Option A. The main problem with the survey would be its reliability.
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Question 17 2 pts A teacher administers an attitude survey to the same students four times....
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are...
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are randomly selected, what is the probability that none own their car? (Hint: think multiplication rule, selecting 4 individual students. in 5 is the same as 20%, right?) O A. 19/20 O B. 624/625 O c. 256,625 O D. 16/20 QUESTION 18 Which of the following variables is NOT discrete? O A the number of Oscar nominations Meryl Streep has received O B. the number...
Question 113 pts If the correlation between scores on a measurement from one time to another...
Question 113 pts If the correlation between scores on a measurement from one time to another is high, then the measurement is said to have which type of reliability? Inter/intra-rater reliability An equivalence or alternative form of reliability Homogeneity Test-retest reliability Question 12 Which of the following are disadvantages of an online or paper/hard form survey? Respondents may not always tell the truth. Self administered survey format may not be suitable for obtaining an explanation of behavior or sensitive information....
Question 14 4 pts Which of the following is true about the length of a survey...
Question 14 4 pts Which of the following is true about the length of a survey o 1 to 2 minutes is best O 5 to 10 minutes is best Duration doesn't matter to respondents taking a survey o longer than 20 minutes is best Question 15 4 pts In the food truck simulation, which of the following was NOT true: using a food cart allowed one to test variables combinations in less time than a food truck (one day...
A fourth-grade teacher suspects that the time he administers a test, and what sort of snack...
A fourth-grade teacher suspects that the time he administers a test, and what sort of snack his students have before the test, affects their performance. To test his theory, he assigns 90 fourth-grade students to one of three groups One group gets candy (jelly beans) for their 9:55 AM snack. Another group gets a high-protein snack (cheese) for their 9:55 AM snack. The third group does not get a 9:55 AM snack. The teacher also randomly assigns 10 of the...
Please Help with this statistics problem: A survey on a large college' students collected data on the following vari...
Please Help with this statistics problem:
A survey on a large college' students collected data on the following variables . Gender (in the data, male 0, female 1) ·Left or Right handed (in the data, right-handed 0, left-handed-1) Height in inches. ·Time spent for studying on weeknight. Graphs A,B,C,D shows histograms of the four variables in scrambled order and without scale markings Question: Which graph goes with each variable ? Explain your reasoning
A survey on a large college' students...
QUESTION 3 A teacher sees students straggling into her class at highly diverse times. She secretly...
QUESTION 3 A teacher sees students straggling into her class at highly diverse times. She secretly records when each person comes into her class. Everyone in the class at the bell gets a score of zero. Then, as each late person comes in, the number of seconds after the bell that the person arrives is recorded. Number of seconds late, then, is each person's individual score. The scores ranged from 0 to 600 (for people who were 10 minutes late)....
Question 2 1 pts A teacher proposes a course designed to increase reading speed. To evaluate...
Question 2 1 pts A teacher proposes a course designed to increase reading speed. To evaluate the effectiveness of this course, the teacher tests students before and after the course. The result is following student 1 2 3 4 5 Speed before class 100 160 120 167 200 Speed after class 136 170 135 169 210 The difference in the reading speeds (before-after) for this sample results in d = –14.6 and 8d = 12.84. Assume that the reading speeds...
2 words Question 2 1 pts We surveyed a random sample of students and found that...
2 words Question 2 1 pts We surveyed a random sample of students and found that they had on average 2 parking tickets in the past year. A 95% confidence interval for the average number of parking tickets is (1.02, 2.98). Which one of the following statements is valid? We are 95% confident that the true mean number of parking tickets is between 1.02 and 2.98. 95% of the population of students have an average number of parking tickets between...
D Question 17 1 pts Consider a monopolist that has two types of consumers. The first, students have a demand curve give...
D Question 17 1 pts Consider a monopolist that has two types of consumers. The first, students have a demand curve given by the following: QA-120-2P. The second type of consumer are non-students who have the following demand curve: QB-200-4P. If the monopolist has constant marginal and average cost equal to 10, which of the following is true if the monopolist practices third degree price discrimination? Total profit earned equals 2150. Total profit earned equals 2250 Total profnt earned equals...
Question 2 – Empirical Probability A research institute conduct a survey of international students enrolled offshore...
Question 2 – Empirical Probability
A research institute conduct a survey of international students
enrolled offshore in higher education programs across major
education sectors. The latest survey was conducted online survey in
2018 and results were summarised in Table. 1 below. ‘Satisfaction’
provides the results in response to the question: “Overall, which
aspects do you satisfy most?” The ‘Total Offshore’ column provides
the aggregate results for all students enrolled from 11
countries.
Nationality
Satisfaction
Malaysia Singapore China Other
Total...
QUESTION 17 Suppose 1 in 5 JwU students own their own car. If four students are randomly selected, what is the probability that none own their car? (Hint: think multiplication rule, selecting 4 individual students. in 5 is the same as 20%, right?) O A. 19/20 O B. 624/625 O c. 256,625 O D. 16/20 QUESTION 18 Which of the following variables is NOT discrete? O A the number of Oscar nominations Meryl Streep has received O B. the number...
Question 14 4 pts Which of the following is true about the length of a survey o 1 to 2 minutes is best O 5 to 10 minutes is best Duration doesn't matter to respondents taking a survey o longer than 20 minutes is best Question 15 4 pts In the food truck simulation, which of the following was NOT true: using a food cart allowed one to test variables combinations in less time than a food truck (one day...
A fourth-grade teacher suspects that the time he administers a test, and what sort of snack his students have before the test, affects their performance. To test his theory, he assigns 90 fourth-grade students to one of three groups One group gets candy (jelly beans) for their 9:55 AM snack. Another group gets a high-protein snack (cheese) for their 9:55 AM snack. The third group does not get a 9:55 AM snack. The teacher also randomly assigns 10 of the...
Please Help with this statistics problem:
A survey on a large college' students collected data on the following variables . Gender (in the data, male 0, female 1) ·Left or Right handed (in the data, right-handed 0, left-handed-1) Height in inches. ·Time spent for studying on weeknight. Graphs A,B,C,D shows histograms of the four variables in scrambled order and without scale markings Question: Which graph goes with each variable ? Explain your reasoning
A survey on a large college' students...
QUESTION 3 A teacher sees students straggling into her class at highly diverse times. She secretly records when each person comes into her class. Everyone in the class at the bell gets a score of zero. Then, as each late person comes in, the number of seconds after the bell that the person arrives is recorded. Number of seconds late, then, is each person's individual score. The scores ranged from 0 to 600 (for people who were 10 minutes late)....
Question 2 1 pts A teacher proposes a course designed to increase reading speed. To evaluate the effectiveness of this course, the teacher tests students before and after the course. The result is following student 1 2 3 4 5 Speed before class 100 160 120 167 200 Speed after class 136 170 135 169 210 The difference in the reading speeds (before-after) for this sample results in d = –14.6 and 8d = 12.84. Assume that the reading speeds...
2 words Question 2 1 pts We surveyed a random sample of students and found that they had on average 2 parking tickets in the past year. A 95% confidence interval for the average number of parking tickets is (1.02, 2.98). Which one of the following statements is valid? We are 95% confident that the true mean number of parking tickets is between 1.02 and 2.98. 95% of the population of students have an average number of parking tickets between...
D Question 17 1 pts Consider a monopolist that has two types of consumers. The first, students have a demand curve given by the following: QA-120-2P. The second type of consumer are non-students who have the following demand curve: QB-200-4P. If the monopolist has constant marginal and average cost equal to 10, which of the following is true if the monopolist practices third degree price discrimination? Total profit earned equals 2150. Total profit earned equals 2250 Total profnt earned equals...
Question 2 – Empirical Probability
A research institute conduct a survey of international students
enrolled offshore in higher education programs across major
education sectors. The latest survey was conducted online survey in
2018 and results were summarised in Table. 1 below. ‘Satisfaction’
provides the results in response to the question: “Overall, which
aspects do you satisfy most?” The ‘Total Offshore’ column provides
the aggregate results for all students enrolled from 11
countries.
Nationality
Satisfaction
Malaysia Singapore China Other
Total...
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