Homework Answers
4.
Here we take a random sample of 100 and we ask each of these 100 students whether they are freshman. The Statistics which we are interested is the sample proportion of freshman which is estimate for population proportion of freshman.
Ans. c. The proportion of students in the sample that are freshman.
5. Which of the variables are categorical?
Ans. a. III ans VI only
6. Which of the variables are continuous quantitative variables?
Ans. b. II, VIII and VIII only
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Questions 1-4: There are 1300 students taking an introductory class, and we'd like to know the...
Questions 1-4: There are 1300 students taking an introductory class, and we'd like to know the...
Questions 1-4: There are 1300 students taking an introductory class, and we'd like to know the proportion of these students that are freshmen. We draw a random sample of size 100. We ask each of these 100 students whether they are freshmen. We then find the proportion in this sample that are freshmen. 1. What is the population?: * O a. The 1300 total students enrolled Ob. The 100 students selected Oc. Whether or not a student is a freshman...
30. Consider a very large population of adults where approximately 45% of the adults enjoy playing...
30. Consider a very large population of adults where approximately 45% of the adults enjoy playing DDR (Dance Dance Revolution). Use the sampling distribution of sample proportions to estimate the probability that in a sample of size 275, more than 50% of the sampled adults enjoy DDR.:* Oa. 0.0478 Ob. 0.0956 Oc. 0.9522 Od. 0.9996 31. Which of the following are assumptions to have a valid confidence interval for a population proportion? I. np 2 15 II. n(1-0) 15 III....
42. The following StatCrunch output shows the results for a one-sample proportions test. Choose the best...
42. The following StatCrunch output shows the results for a one-sample proportions test. Choose the best interpretation of the p-value.:* One sample Proportion with summary DOX Options Hypothesis test results: p proportion of successes for population Ho p = 0.5 HAD 0.5 Proportion Count Total Sample Prop. Std. Err. P-value 174 0.58 0.028867513 2.7712812 0.0056 Z-Stat p 300 Java Applet Window O a. The probability that the alternative hypothesis is correct. Ob. The probability that we correctly reject the null...
1. i) What do we mean by Pareto efficiency? ii) What is a market failure? iii)...
1. i) What do we mean by Pareto efficiency? ii) What is a market failure? iii) Have you ever encounter a situation where the allocation was not efficient? iv) Efficiency is not the same than equity. Explain the difference v) (Difficult) Why efficiency is a commonly used as an objective for public policy (more than equity). (Hint: think about which type of policies will be easier to pass in the congress?) vi) One hundred people are distributed in two beaches....
I cant figure out these questions, can you please help? thank you 1. 2. 3. 4....
I cant figure out these questions, can you please help? thank
you
1.
2.
3.
4.
What is the product of the Dieckmann condensation of this diester, Quest 1 pour المللی OAV B. C. D.V . What would be the major product of the following reaction? CH + OH CHECCH 100 °C 2 CH C=CH- Chi CH CHOCH=C CH ow-O-၃၀င် II III . CHO CH=CHÖCHS IV O AI OBIV OC. III DI O EV O What would be the major...
Part (V) to (Viii) An accounting class of 250 students is allocated into several tutorials to...
Part (V) to (Viii)
An accounting class of 250 students is allocated into several tutorials to be taken by either Tutor A and Tutor B. At the end of the semester the lecturer-in-charge looks at the distribution of marks by tutor. Table 1 provides this summary of the marks Table 1: Accounting student results according to their tutor Fail Credit Distinction Higher distinction 1 4 Pass Total Tutor A Tutor B Total 13 12 25 59 71 130 26 39...
An accounting class of 250 students is allocated into several tutorials to be taken by either...
An accounting class of 250 students is allocated into several tutorials to be taken by either Tutor A and Tutor B. At the end of the semester the lecturer-in-charge looks at the distribution of marks by tutor. Table 1 provides this summary of the marks Table 1: Accounting student results according to their tutor Fail Credit Distinction Higher distinction 1 4 Pass Total Tutor A Tutor B Total 13 12 25 59 71 130 26 39 65 6 19 25...
Question 4 (2 points) The term "imaginary audience" refers to adolescents' O A) ability to understand...
Question 4 (2 points) The term "imaginary audience" refers to adolescents' O A) ability to understand how others perceive them OB) false belief that everyone is attending to their behavior and appearance OC) constant posing and posturing for "selfies" D) the belief that others are spying on them Question 5 (2 points) What is Piaget's fourth and final stage of cognitive development? O A) preoperational B) pre-formal OC) concrete D) formal Question 6 (2 points) According to Erikson, the goal...
Question 1 ASW, a regional shoe chain, has recently launched an online store. Sales via the...
Question 1 ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management suspects that its regular customers have concerns regarding the security of online transactions. To determine if this is the case, they plan to survey a random sample of their regular customers. Under consideration are several plans for selecting the sample. Name the sampling strategy for each. Plan A - Regular customers...
1. A hypothetical investigation on rider satisfaction with a particular public transit system serving commuting residents...
1. A hypothetical investigation on rider satisfaction with a particular public transit system serving commuting residents of British California (BC) and Prince Edward’s County (PEC) offers some interesting findings. The proportion of commuters from BC that indicated low satisfaction with the transit system’s service in the 2018 calendar year was 65 percent, and the proportion from PEC was 70 percent. These point estimates were based on samples of 5,380 BC commuters and 6,810 PEC commuters, whose system-using commuters number in...
Questions 1-4: There are 1300 students taking an introductory class, and we'd like to know the proportion of these students that are freshmen. We draw a random sample of size 100. We ask each of these 100 students whether they are freshmen. We then find the proportion in this sample that are freshmen. 1. What is the population?: * O a. The 1300 total students enrolled Ob. The 100 students selected Oc. Whether or not a student is a freshman...
30. Consider a very large population of adults where approximately 45% of the adults enjoy playing DDR (Dance Dance Revolution). Use the sampling distribution of sample proportions to estimate the probability that in a sample of size 275, more than 50% of the sampled adults enjoy DDR.:* Oa. 0.0478 Ob. 0.0956 Oc. 0.9522 Od. 0.9996 31. Which of the following are assumptions to have a valid confidence interval for a population proportion? I. np 2 15 II. n(1-0) 15 III....
42. The following StatCrunch output shows the results for a one-sample proportions test. Choose the best interpretation of the p-value.:* One sample Proportion with summary DOX Options Hypothesis test results: p proportion of successes for population Ho p = 0.5 HAD 0.5 Proportion Count Total Sample Prop. Std. Err. P-value 174 0.58 0.028867513 2.7712812 0.0056 Z-Stat p 300 Java Applet Window O a. The probability that the alternative hypothesis is correct. Ob. The probability that we correctly reject the null...
1. i) What do we mean by Pareto efficiency? ii) What is a market failure? iii) Have you ever encounter a situation where the allocation was not efficient? iv) Efficiency is not the same than equity. Explain the difference v) (Difficult) Why efficiency is a commonly used as an objective for public policy (more than equity). (Hint: think about which type of policies will be easier to pass in the congress?) vi) One hundred people are distributed in two beaches....
I cant figure out these questions, can you please help? thank
you
1.
2.
3.
4.
What is the product of the Dieckmann condensation of this diester, Quest 1 pour المللی OAV B. C. D.V . What would be the major product of the following reaction? CH + OH CHECCH 100 °C 2 CH C=CH- Chi CH CHOCH=C CH ow-O-၃၀င် II III . CHO CH=CHÖCHS IV O AI OBIV OC. III DI O EV O What would be the major...
Part (V) to (Viii)
An accounting class of 250 students is allocated into several tutorials to be taken by either Tutor A and Tutor B. At the end of the semester the lecturer-in-charge looks at the distribution of marks by tutor. Table 1 provides this summary of the marks Table 1: Accounting student results according to their tutor Fail Credit Distinction Higher distinction 1 4 Pass Total Tutor A Tutor B Total 13 12 25 59 71 130 26 39...
An accounting class of 250 students is allocated into several tutorials to be taken by either Tutor A and Tutor B. At the end of the semester the lecturer-in-charge looks at the distribution of marks by tutor. Table 1 provides this summary of the marks Table 1: Accounting student results according to their tutor Fail Credit Distinction Higher distinction 1 4 Pass Total Tutor A Tutor B Total 13 12 25 59 71 130 26 39 65 6 19 25...
Question 4 (2 points) The term "imaginary audience" refers to adolescents' O A) ability to understand how others perceive them OB) false belief that everyone is attending to their behavior and appearance OC) constant posing and posturing for "selfies" D) the belief that others are spying on them Question 5 (2 points) What is Piaget's fourth and final stage of cognitive development? O A) preoperational B) pre-formal OC) concrete D) formal Question 6 (2 points) According to Erikson, the goal...
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