Question 1

Independent samples of size n_A = 3 and n_B = 3 are taken from two continuous populations. A) How many possible collections of ranks associated with population A are there? B) Obtain the null distribution of W_A.

Accepted Answer

Part A: 20

Question 2

In a study of two treatment effects a sample of size 31 is taken. If in 7 pairs, the two responses are equal, then the sign test is performed with the effective sample size n = 24.

Accepted Answer

A) True 
 B)False  True

Question 3

Use the one side test to determine the significance probability when 
 rS1U1B1SPS1U1B0= 0.08 and n = 48. Round your answer to four decimal places.

Accepted Answer

0.2917

Question 4

The following data shows the recent population percents by gender.
  Is there a difference between the population percents? 
A) Use the sign test with α   below 0.05. 
B) Find the significance probability.

Accepted Answer

The answer of The following data shows the recent population...

Question 5

The mean bacteria count per unit volume of lake water is obtained from each sample of lake water. Five values are obtained from each to two beaches.
  
Evaluate Wilcoxon's rank-sum statistic based on the Beach 1.

Accepted Answer

The answer of The mean bacteria count per unit volume...

Question 6

The following data shows the recent population percents by gender.
  Is there a difference between the population percents? Apply the Wilcoxon signed-rank test with .
α near 0.05.

Accepted Answer

The answer of The following data shows the recent population...

Question 7

Use Appendix B. Table 8, to find:
A)  
B)  
C) The value of c so that  is nearly 0.05 when n = 13.

Accepted Answer

The answer of Use Appendix B. Table 8, to find:
A)...

Question 8

15 Each of two judges in a popular dancing contest assigns a score from 3 through 7 to each participating couple.
  
Conduct a signed rank test with the intent of showing that Judge 1 typically gives higher scores. Take α = .05.
[Hint: P [ T + ≥ 19 ] = .047.

Accepted Answer

The answer of 15 Each of two judges in a...

Question 9

Using Appendix B, Table 7, find: C) The point c such that is close to 0.03 when n_A = 8, n_B = 9.

Accepted Answer

The answer of Using Appendix B, Table 7, find:
 
C)...

Question 10

A study about the concentration of mercury in the sediment of two lakes shows the following numbers.
  Using the Wilcoxon rank-sum procedure, test if the mercury concentration is different for the two lakes. Use  α = 0.05. Answer "Mercury concentration is (is not) significantly different for the two lakes".

Accepted Answer

The answer of A study about the concentration of mercury...

Question 11

A publicist group when testing the preferences, among the executives of a company, for the two formats of a TV commercial , discover that 12 out of 17 subjects favored format A. Using the sign test, find the significance probability when H₁ states that format A is preferable.

Accepted Answer

The answer of A publicist group when testing the preferences,...

Question 12

In some colleges, the Calculus course is taught in two different formats: in campus and on-line. The passing percents per section are shown below.
  Do the data strongly indicate different passing percent's among the two teaching formats?

Accepted Answer

The answer of In some colleges, the Calculus course is...

Question 13

The number of breathing pauses per hour(BPH) helps determine a sleeping disorder.
The values of BPH from a random sample of 5 males and a random sample of 5 females are
  
A) Test for equality using the Wilcoxon rank-sum test with  approximately 0.05. Answer "The populations are identical" or "The populations are different".

B) Determine the significance probability.

Accepted Answer

The answer of The number of breathing pauses per hour(BPH)...

Question 14

The number of goals in favor (G.F) and goals against (G.A) by the first four national teams in one year's F.I.F.A World Cup is shown below.
  Calculate Spearman's rank correlation

Accepted Answer

The answer of The number of goals in favor (G.F)...

Question 15

Using Appendix B, Table 7, find the points c1 and c2 such that 
 is about 0.026 when nA = 6, nB = 7. Provide your answer in the form (c1, c2).

Accepted Answer

A)  (29, 55) 
B)  (56, 28) 
C)  (27, 57) 
D)  (26, 58)

Exam 15: Nonparametric Inference

Independent samples of size n_A = 3 and n_B = 3 are taken from two continuous populations. A) How many possible collections of ranks associated with population A are there? B) Obtain the null distribution of W_A.

In a study of two treatment effects a sample of size 31 is taken. If in 7 pairs, the two responses are equal, then the sign test is performed with the effective sample size n = 24.

Use the one side test to determine the significance probability when r_SP= 0.08 and n = 48. Round your answer to four decimal places.

The following data shows the recent population percents by gender. Is there a difference between the population percents? A) Use the sign test with α below 0.05. B) Find the significance probability.

The mean bacteria count per unit volume of lake water is obtained from each sample of lake water. Five values are obtained from each to two beaches. Evaluate Wilcoxon's rank-sum statistic based on the Beach 1.

The following data shows the recent population percents by gender. Is there a difference between the population percents? Apply the Wilcoxon signed-rank test with . α near 0.05.

Use Appendix B. Table 8, to find: A) B) C) The value of c so that is nearly 0.05 when n = 13.

15 Each of two judges in a popular dancing contest assigns a score from 3 through 7 to each participating couple. Conduct a signed rank test with the intent of showing that Judge 1 typically gives higher scores. Take α = .05. [Hint: P [ T + ≥ 19 ] = .047.

Using Appendix B, Table 7, find: C) The point c such that is close to 0.03 when n_A = 8, n_B = 9.

A publicist group when testing the preferences, among the executives of a company, for the two formats of a TV commercial , discover that 12 out of 17 subjects favored format A. Using the sign test, find the significance probability when H₁ states that format A is preferable.

In some colleges, the Calculus course is taught in two different formats: in campus and on-line. The passing percents per section are shown below. Do the data strongly indicate different passing percent's among the two teaching formats?

The number of goals in favor (G.F) and goals against (G.A) by the first four national teams in one year's F.I.F.A World Cup is shown below. Calculate Spearman's rank correlation

Using Appendix B, Table 7, find the points c₁ and c₂ such that is about 0.026 when n_A = 6, n_B = 7. Provide your answer in the form (c₁, c₂) .

Exam 15: Nonparametric Inference

Independent samples of size nA = 3 and nB = 3 are taken from two continuous populations. A) How many possible collections of ranks associated with population A are there? B) Obtain the null distribution of WA.

In a study of two treatment effects a sample of size 31 is taken. If in 7 pairs, the two responses are equal, then the sign test is performed with the effective sample size n = 24.

Use the one side test to determine the significance probability when rSP= 0.08 and n = 48. Round your answer to four decimal places.

The following data shows the recent population percents by gender. Is there a difference between the population percents? A) Use the sign test with α below 0.05. B) Find the significance probability.

The mean bacteria count per unit volume of lake water is obtained from each sample of lake water. Five values are obtained from each to two beaches. Evaluate Wilcoxon's rank-sum statistic based on the Beach 1.

The following data shows the recent population percents by gender. Is there a difference between the population percents? Apply the Wilcoxon signed-rank test with . α near 0.05.

Use Appendix B. Table 8, to find: A) B) C) The value of c so that is nearly 0.05 when n = 13.

15 Each of two judges in a popular dancing contest assigns a score from 3 through 7 to each participating couple. Conduct a signed rank test with the intent of showing that Judge 1 typically gives higher scores. Take α = .05. [Hint: P [ T + ≥ 19 ] = .047.

Using Appendix B, Table 7, find: C) The point c such that is close to 0.03 when nA = 8, nB = 9.

A publicist group when testing the preferences, among the executives of a company, for the two formats of a TV commercial , discover that 12 out of 17 subjects favored format A. Using the sign test, find the significance probability when H1 states that format A is preferable.

In some colleges, the Calculus course is taught in two different formats: in campus and on-line. The passing percents per section are shown below. Do the data strongly indicate different passing percent's among the two teaching formats?

The number of goals in favor (G.F) and goals against (G.A) by the first four national teams in one year's F.I.F.A World Cup is shown below. Calculate Spearman's rank correlation

Using Appendix B, Table 7, find the points c1 and c2 such that is about 0.026 when nA = 6, nB = 7. Provide your answer in the form (c1, c2) .

Independent samples of size n_A = 3 and n_B = 3 are taken from two continuous populations. A) How many possible collections of ranks associated with population A are there? B) Obtain the null distribution of W_A.

Use the one side test to determine the significance probability when r_SP= 0.08 and n = 48. Round your answer to four decimal places.

Using Appendix B, Table 7, find: C) The point c such that is close to 0.03 when n_A = 8, n_B = 9.

A publicist group when testing the preferences, among the executives of a company, for the two formats of a TV commercial , discover that 12 out of 17 subjects favored format A. Using the sign test, find the significance probability when H₁ states that format A is preferable.

Using Appendix B, Table 7, find the points c₁ and c₂ such that is about 0.026 when n_A = 6, n_B = 7. Provide your answer in the form (c₁, c₂) .