OK I have two data sets with 30 million rows each each data set is five columns with four attributes and an amount. I want to confirm that the two data sets are exactly the same no two rows of data in the 30 million rolls are duplicates

For my proof I will confirm each data set has the same number of rows. And I will also do the following:

I will create four smaller data sets from each of the two large data sets. Each of the smaller data sets will remove one of the four attributes

If each of those for data sets matches exactly and the total count matches is that proof that the two large data sets are exactly the same

The reason I am doing this test as I am not able to compare 30 million rows to 30 million rows because the set is too large for the tools I have available

QUESTION: If the four smaller data sets match exactly and the total row count matches exactly. Have I proved these the two 30 million row data sets are exactly the same l?

OK I have two data sets with 30 million rows each each data set is five columns with four attributes and an amount. I want to confirm that the two data sets are exactly the same no two rows of data in the 30 million rolls are duplicates

For my proof I will confirm each data set has the same number of rows. And I will also do the following:

I will create four smaller data sets from each of the two large data sets. Each of the smaller data sets will remove one of the four attributes

If each of those for data sets matches exactly and the total count matches is that proof that the two large data sets are exactly the same

The reason I am doing this test as I am not able to compare 30 million rows to 30 million rows because the set is too large for the tools I have available

QUESTION: If the four smaller data sets match exactly and the total row count matches exactly. Have I proved these the two 30 million row data sets are exactly the same l?

Case Y X1 X2 X3 X4 X5 X6

1 43 45 92 61 39 30 51

2 63 47 73 63 54 51 64

3 71 48 88 76 69 68 70

4 61 35 86 54 47 45 63

5 81 47 85 71 66 56 78

6 43 34 51 54 44 49 55

7 58 35 70 66 56 42 67

8 71 41 64 70 57 50 75

9 72 31 81 71 69 72 82

10 67 41 78 62 49 45 61

11 64 34 65 58 60 53 53

12 67 41 72 59 41 47 60

13 69 25 61 55 44 57 62

14 68 35 75 59 47 83 83

15 77 46 75 79 74 54 77

16 81 36 52 60 74 50 90

17 74 63 77 79 71 64 85

18 65 60 78 55 77 65 60

19 65 46 83 75 59 46 70

20 50 52 76 64 56 68 58

1. What is the regression equation? (Perform a Multiple Regression Analysis and Paste the table in the first answer box.) 2. State the hypotheses to test for the significance of the independent factors. 3. Which independent factors are significant at alpha= 0.05? Explain. 4. State the hypotheses to test for the significance of the regression equation. Is the regression equation significant at alpha=0.05? Explain. 5. How much of the variability in Y is explained by your model? Explain. 6. What tools would you use to check if the model has multicollinearity problems? 7. Does this model have multicollinearity problems? Explain. 8. If you were to propose a simplified model, eliminating some variables, what would it be? Why? 9. What tools would you use to check if the model assumptions are met? 10. Does this model meet the assumptions? Explain.

The following frequency table summarizes the ages of 50 customers for both shopping stores,

50                                    50

1. Compute, the mean and standard deviation per customer age group for both shopping stores in excel
2. Distinguish the customers for each store per the results

In a study of heart surgery, one issue was the effect of drugs called beta-blockers on the pulse

rate of patients during surgery. The available subjects were divided at random into two groups of

40 patients each. One group received a beta-blocker; the other group received a placebo. The

pulse rate of each patient at a critical point during the operation was recorded. The treatment

group had a mean pulse rate of 57 and standard deviation 7. For the control group, the mean

pulse rate was 60 and the standard deviation was 5.

(a) Construct and interpret a 93% confidence interval for the difference in mean pulse rates.

(b) Perform the 5 steps of Hypothesis Testing.

Problem 9

In a study of heart surgery, one issue was the effect of drugs called beta-blockers on the pulse

rate of patients during surgery. The available subjects were divided at random into two groups of

40 patients each. One group received a beta-blocker; the other group received a placebo. The

pulse rate of each patient at a critical point during the operation was recorded. The treatment

group had a mean pulse rate of 57 and standard deviation 7. For the control group, the mean

pulse rate was 60 and the standard deviation was 5.

(a) Construct and interpret a 93% confidence interval for the difference in mean pulse rates.

(b) Perform the 5 steps of Hypothesis Testing.

You work for the treasury of the Seven Kingdoms. Your task is to evaluate the country’s international trade activities. Below is the data you collected (in Gold Dragons).

1. Compute GDP of the Seven Kingdoms.

2. Compute Trade Balance.

3. Compute Net Facto Income from Abroad (NFIA).

4. Compute Net Unilateral Transfers (NUT).

5. Compute Current Account (CA). Does the country have current account deficit, or current account surplus? What does this say about the country’s spending vs. its earnings?

6. Compute Financial Account (FA).

7. Compute Capital Account (KA).

8. Compute statistical discrepancy.

The local government is running a flu vaccination program. Are the following costs fixed, variable, or step costs?(

a) Costs of occupancy

(b) Costs of management

(c) Costs of part-time employee salaries based on service volume

(d) Costs of vaccine consumed

2. Clifftown’s Parks and Recreation Department is introducing a new summer program for children in elementary school. Programming runs from 8:00 a.m. to 5:00 p.m., Monday through Friday. The proposed camp is 10 weeks long and is planned for 50 children. Fixed costs, which include equipment and facilities costs, are estimated at $5,000 for 10 weeks. The facilities and equipment can accommodate up to 100 children per week, which is the maximum the depart-ment is willing to enroll in any given session. There will be 5 camp counselors each week for the 50 children, at a total cost of $2,000 per week for the 5 counselors. The department is comfort-able with each counselor being responsible for 11 children. Any more than that and an additional counselor will need to be hired. The camp will serve lunch and snacks on each weekday, at a weekly cost of $15.

(a) Identify the fixed, step, and variable costs.

(b) What would be the cost of the program for 50 children?

(c) What would be the cost of the program for 75 children?

3. Desert Vista Homeless Campus provides shelter and breakfast to individuals in need. Local governments and several nonprofit organizations provide financial assistance to the shelter and require weekly reporting. Desert Vista’s current facility can hold a maximum of 300 people. The base weekly cost to run the shelter is $1,500. The shelter also needs 3 cooks per 75 residents to prepare a sufficient amount of food for breakfast. Cooks are paid a flat fee of $50 for each meal prepared. Breakfast costs an average of $2 per meal to prepare, excluding staff costs.

(a) Identify the fixed, step, and variable costs.

(b) What is the cost incurred by the campus for 150 people over a 1-week period?

(c) What is the cost incurred by the campus for 200 people over a 1-week period?

3. Two 95% confidence intervals for the means of both of your groups. Show the formulas that you used to calculate your confidence intervals. Compare the 2 confidence intervals and interpret the results of the 2 confidence intervals. Do the confidence intervals overlap? You will have a confidence interval for each of your 2 groups. Since you do not know the population standard deviation, this will be a T Distribution. You can look at your notes in Section 8:1 for how to construct and interpret your confidence interval.

4. A 95% confidence interval for the difference between the means of your 2 groups. Based on your confidence interval, does there appear to be a difference between your 2 groups? Since you are constructing a confidence interval for the difference between the means of your 2 groups, you can use your calculator. On your calculator, you should use Stat Test #0. You can look at your notes in Section 10:1 for how to construct and interpret your confidence interval.

5. A hypothesis test for the difference between the means of your 2 groups. State the hypotheses, calculate the test statistic, compute the p-value, and make a decision. Since you are performing a hypothesis test for the difference between the means, you can use your calculator. On your calculator, you should use Stat Test #4. You can look at your notes in Section 10:2 for how to perform the hypothesis test.

6. A conclusion. Based on your hypothesis test, can you conclude that there is a difference between your 2 groups? This should be your last step for the hypothesis test (that you performed in step #5).

1. Male) Mean: 7.967 Median: 7 Mode: 6, 7 Range: 7 Standard Deviation: 1.9911

2. Female) Mean: 7.567 Median: 7 Mode: 7 Range: 7 Standard Deviation: 1.8696

3. Males	Females
   Age they started a sport
   6	7
   11	8
   10	7
   6	10
   6	8
   7	5
   7	6
   9	8
   12	11
   6	8
   5	7
   6	7
   7	9
   10	7
   10	6
   11	12
   10	5
   7	7
   7	7
   8	11
   7	6
   9	7
   6	5
   6	9
   7	8
   10	5
   9	5
   9	9
   10	8
   5	9

. True or false?

(1) There is at most one pivot in any row.

(2) There is at most one pivot in any column.

(3) There is at least one pivot in any row.

(4) There is at least one pivot in any column.

(5) There cannot be more free variables than pivot variables.

(6) There is a linear system that has exactly two solutions.

(7) The weights c1, ..., cp ? R in a linear combination c1v1 + ... + cpvp cannot all be zero.

(8) Given nonzero vectors u, v in R n , span{u, v} contains the line through u and the origin. Hint: can you describe this line as a set of vectors?

(9) Asking whether the linear system corresponding to a1 a2 a3 b is consistent, is the same as asking whether b is a linear combination of a1, a2, a3.

(10) If the augmented matrix of a linear system has two identical rows, the linear system is necessarily inconsistent