代做Regular Statistics Project代写数据结构程序

Regular Statistics Project

Directions:

Round the relative frequencies and probabilities to four decimal places. Carry all other decimal answers to two places.

Collect Data:

1.   Use the data from Appendix C (check it from textbook). [6]

Use a stratified sampling method by lap (races 1 to 20) and a random number generator to pick six lap times from each stratum. Record the lap times below for laps two to seven.

2.   Construct a histogram. Make five to six intervals. Sketch the graph using a ruler and pencil. Scale the axes.  [10]

3.   Calculate the following: [4]

4.   Draw a smooth curve through the tops of the bars of the histogram. Write two completed sentences to describe the general shape of the curve. [6]

(Keep it simple. Does the graph go straight across, does it have a v-shape, does it have a hump in the middle or at either end, and so on?)

5.   Use your sample mean, sample standard deviation, and histogram to help, what is the approximate theoretical distribution of the data? [6]

6.   Describe the data [14]

7.   Theoretical distribution [14]

Using the theoretical distribution, complete the following statements. You should use a normal approximation based on your sample data.

8.   Discussion questions [15]

Use 6 completed sentences to answer the following question.