statistics..please help..

Question 1. 1. What type of research uses numeric measurement data? (Points : 3)

Question 2. 2. What type of research uses a research hypothesis? (Points : 3)

Question 3. 3. What type of research does not use statistical data analysis? (Points : 3)

Question 4. 4. What type of research preempts all other types of research endeavors? (Points : 3)

Question 5. 5. Business research is a type of ________________ inquiry. (Points : 3)

Question 6. 6. What are the three main types of non-probability sampling used in business research? (Points : 3)

Question 7. 7. In a situation where in a confidence level .01 what percent of the measurement results are left to chance? (Points : 3)

Question 8. 8. What is the most important ingredient in a statistical testing procedure? (Points : 3)

Question 9. 9. If a production manager wanted to determine whether or not the first shift was processing more widgets than the second shift, what type of statistical process would be used? (Points : 3)

Question 10. 10. What type of t test seeks to determine whether or not a relationship exists in one sample over two conditions? _______________ (Points : 3)

Question 22. 22. Calculation: The range of a set of numbers is 1,362. The greatest number is 2,172. What is the least number? (Points : 4)

Question 23. 23. Calculation: The mean of a set of 7 numbers is 13. What is the sum of the numbers? (Points : 4)

Question 24. 24. Calculation: Find the mode of the following test scores: 89, 78, 91, 82, 75, 89, 84, 95, 89, 93 (Points : 4)

Question 25. 25. Calculation: The mean of a set of data is 174.25 and the sum of the data is 1,394. How many numbers are in the set? (Points : 4)

Question 26. 26. Calculation: The grade point averages of 10 students are listed below. Find the median grade point average.

3.15,  3.62,  2.54,  2.81,  3.97,  1.85,  1.93,  2.63,  2.50,  2.80 (Points : 4)

Question 27. 27. Calculation: Given the following raw scores, calculate the following values: Range, Variance and Standard Deviation, show your calculations:
Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3 (Points : 5)

Question 37. 37. Word Problems: Compute the sample mean, sample median X(M), sample range, and sample variance.

The following data represent scores of 50 students in an applied business statistics test.


                72    72    93    70    59    78    74    65    73    80
                57    67    72    57    83    76    74    56    68    67
                74    76    79    72    61    72    73    76    67    49
                71    53    67    65   100    83    69    61    72    68
                65    51    75    68    75    66    77    61    64    74 (Points : 4)

Question 38. 38. Word Problem: Does the data set represent a sample or a population? If it is a sample, describe the population from which it has been drawn.

The following data represent scores of 50 students in an applied business statistics test.


                72    72    93    70    59    78    74    65    73    80
                57    67    72    57    83    76    74    56    68    67
                74    76    79    72    61    72    73    76    67    49
                71    53    67    65   100    83    69    61    72    68
                65    51    75    68    75    66    77    61    64    74 (Points : 4)

Question 39. 39. Word Problems: The number of widgets produced by 9 employees in an eight hour shift is recorded as:  135,  120,  116,  119,  121,  125,  135,  131,  123

Find the mean number of widgets produced. (Points : 3)

Question 40. 40. Word Problems: The number of widgets produced by 9 employees in an eight hour shift is recorded as:  135,  120,  116,  119,  121,  125,  135,  131,  123

What is the range of widgets produced given in the problem presented above? (Points : 3)

Question 41. 41. Word Problems: The number of widgets produced by 9 employees in an eight hour shift is recorded as:  135,  120,  116,  119,  121,  125,  135,  131,  123

What is the mode of the number of widgets produced presented above? (Points : 3)

Question 42. 42. Word Problems: The number of widgets produced by 9 employees in an eight hour shift is recorded as:  135,  120,  116,  119,  121,  125,  135,  131,  123

What is the median of the number of widgets produced presented above? (Points : 3)

Question 43. 43. Critical Thinking: Two workers on the same job show the following results over a long period of time.

Which worker appears to be more consistent in the time he requires to complete the job? Explain.

(Points : 5)

Question 44. 44. Critical Thinking: Two workers on the same job show the following results over a long period of time.

Which worker appears to be faster in completing the job? Explain.

(Points : 5)

Question 45. 45. Critical Thinking: Explain the differences between longitudinal and cross sectional business research studies.
(Points : 10)

Question 46. 46. Critical Thinking: Suppose the manager of a plant is concerned with the total number of man-hours lost due to accidents for the past 12 months.  The company statistician has reported the mean number of man-hours lost per month but did not keep a record of the total sum.  Should the manager order the study repeated to obtain the desired information?  Explain your answer clearly. (Points : 10)

Question 47. 47. Critical Thinking: Explain why histograms and frequency polygons are used in business statistics. (Points : 10)

Question 48. 48. Critical Thinking: Which two types of probability sampling are best suited for business research and statistical data analysis, and why? (Points : 10)

Question 49. 49. Critical Thinking: What is the difference between a null hypothesis and an alternate hypothesis? (Points : 10)

Question 50. 50. Critical Thinking: Explain what is meant by the critical value of a statistical value. (Points : 10)

Question 51. 51. Critical Thinking: What is the difference between a t test for independent means and a correlated t test? (Points : 10)

Question 52. 52. Critical Thinking: Explain the .05 confidence level. (Points : 10)

Question 53. 53. Critical Thinking: How is a research question similar to a research hypothesis? (Points : 10)

Question 54. 54. Critical Thinking: Describe each of the following statistical terms, and where applicable, define with the appropriate equation: Range, Variance, Standard Deviation (Points : 10)

Question 55. 55. Critical Thinking: Give a brief definition and an example of the following:
a. Descriptive Statistics
b. Inferential Statistics (Points : 10)

Question 56. 56. Critical Thinking: What does the correlation coefficient r describe? What about r squared? (Points : 10)

Question 57. 57. Critical Thinking: Describe some of the issues or concerns (at least three) which would be addressed in deciding how to perform a statistical test of a hypothesis: (Points : 15)

Question 58. 58. Critical Thinking: Discuss the implications of: magnitude (from 0 to 1); sign ( + or -); and probability versus causality for the Correlation Coefficient (also known as the Pearson Product-Moment Correlation Coefficient). (Points : 15)

Question 59. 59. Critical Thinking: Describe how you would develop a random sample from among Argosy students (Points : 15)