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Ryan, Engineer

Category: Calculus and Above

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Experience: B.S. in Civil Engineering

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Determine whether the given value is a statistic or a parameter.

Resolved Question:

Determine whether the given value is a statistic or a parameter. After taking the first exam, 15 of the students dropped the class. (Points : 6) Parameter Statistic

2. Identify the number as either continuous or discrete. The number of stories in a Manhattan building is 22. (Points : 6) Discrete Continuous

3. The following frequency distribution analyzes the scores on a math test. Find the class midpoint of scores interval 95-99. (Points : 6) 97.5 98.0 96.5 97.0

4. Construct the relative frequency distribution that corresponds to the given frequency distribution. (Points : 6)

5. Construct the cumulative frequency distribution that corresponds to the given frequency distribution. (Points : 6)

6. Construct the cumulative frequency distribution that corresponds to the given frequency distribution. (Points : 6)

7. Six college buddies bought each other Christmas gifts. They spent: $261.12, $120.52, $186.23, $298.97, $171.55, $263.96 What was the mean amount spent? Round your answer to the nearest cent. (Points : 6) $325.59 $260.47 $217.06 $248.47

8. The distances traveled (in miles) to 7 different swim meets are given below:

10, 24, 34, 46, 61, 73, 86

Find the median distance traveled. (Points : 6) 34 miles 61 miles 48 miles 46 miles

9. Find the midrange for the given sample data. 49, 52, 52, 52, 74, 67, 55, 55 (Points : 6) 53.5 61.5 25 12.5

10. Find the midrange for the given sample data. 1.4, 2.6, 3.1, 1.0, 1.3, 3.9, 2.0, 3.3, 2.1, 2.9, 2.0 (Points : 6) 2.45 2.0 2.15 2.1

11. Find the mode(s) for the given sample data. 78, 71, 32, 71, 29, 78

(Points : 6) 74.5 78 71 78, 71

12. The test scores of 40 students are summarized in the frequency distribution below. Find the mean score. (Points : 6) 74.5 71.7 68.0 75.5

13. Find the standard deviation for the given data. Round your answer to one more decimal place than the original data: 2, 6, 15, 9, 11, 22, 1, 4, 8, 19. (Points : 7) 6.3 6.8 7.1 2.1

14. Use the empirical rule to solve the problem. The systolic blood pressure of 18-year-old women is normally distributed with a mean of 120 mmHg and a standard deviation of 12 mmHg. What percentage of 18-year-old women have a systolic blood pressure between 96 mmHg and 144 mmHg? (Points : 7) 95.44% 68.26% 99.99% 99.74%

15. Find the z-score corresponding to the given value and use the z-score to determine whether the value is unusual. Consider a score to be unusual if its z-score is less than -2.00 or greater than 2.00. Round the z-score to the nearest tenth if necessary. A time for the 100 meter sprint of 15.2 seconds at a school where the mean time for the 100 meter sprint is 17.5 seconds and the standard deviation is 2.1 seconds. (Points : 7) 1.1; not unusual -2.3; unusual -1.1; unusual -1.1; not unusual

16. The following frequency distribution analyzes the scores on a math test. Find the class boundaries of scores interval 40-59. (Points : 7) 39.5, 58.5 40.5, 59.5 40.5, 58.5 39.5, 59.5

I take it that the ones for 5A, 5B, 5C, and 5D are the answers you are to choose from. Correct?

Is the one that you sent for #3 actually for #4?

Also, I still need the one for #6.

I have the other problems ready for you. If it helps, I can post the answers that I have now so that you can use them while I finish up the remaining few problems.

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