- Submitted By: broozilla
- Date Submitted: 12/09/2013 8:02 PM
- Category: Miscellaneous
- Words: 359
- Page: 2
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Math 119 Project

Part I

1. Frequency Table

2. Histogram

3. Split Stemplot

4. mean: 21

standard deviation: 3.247

minimum: 18

first quartile: 19

median: 20

third quartile: 22

maximum: 38

5. outliers: 27,27,28,29,38

lower fence: 19 - 1.5(3) = 14.5

upper fence: 22 + 1.5(3) = 26.5

6.

7. mean > median right skewed

Median is a more representative measure of center. Skews and outliers are present and the median is not influenced by outliers.

Part II

1. Contingency Table

2. P(F and D) = 0.134

3. P(M or N) = 0.91

4. P(F|R) = 0.0741

5. P(F) = 27/67 = 0.403 ≠ P(F|R) Dependent

Part III

1. Discrete Probability Distribution Table

2. a) Probabilities sum up to 1.

b) Each probability is between 0 and 1. 0 ≤ p(x) ≤ 1

3. p = 0.246

4. mean: 2.168

standard deviation: 1.294

Part IV

1. p = 0.821

2. x = 0 through n n = 15

a) Fixed number of trials. (students) n = 15

b) Each student is born in the United States independent of other students.

3. p(x = 7) = binompdf (15,0.821,7) = 0.00171

4. p(x ≥ 13) = binompdf (15,0.821,12) = 0.481

Part V

1. (3.026, 25.136)

2. We are 95% confident the true population mean of hours students in Mrs. Holcombe's Math 119 class work per week is between 3.026 and 25.156.

3. Yes, because 15 is within the confidence interval of 3.026 and 25.156.

Part VI

1. Ho: p = 0.2 Ha: p ≠ 0.2

2. z = -1.344

3. p = 0.179

4. 0.179 > 0.05 Fail to reject Ho

5. We do not have evidence the proportion of students who drink coffee daily in Mrs. Holcombe's classes differs from the 20% of daily coffee drinkers campus wide.

Part VII

1. y = -195.743 + 5.285x

2. r = 0.572

general: positive, moderate, linear

specific: as

3. slope: 5.285

For every 1 inch increase in height, weight increases by 5.285 pounds.

4. residual: -21.357