Recitation 5

A Simple Random Sample

In this recitation you will each take a simple random sample from the 53 people registered for this class. We will look at determining the proportion of students who are in CLA (the College of Liberal Arts). The table below shows people registered, labeled from 01 to 53, the last four digits of their student ID number, and their home college. You should also have a random number table--they were generated by computer and are all different.

1.

Use the random number table to select a simple random sample. If you are in the recitation that begins at 10:10 (Lab 05) take a sample of size 5. If you are in the recitation that begins at 12:20 (Lab 06) take a sample of size 10.

2.

Compute the proportion of CLA majors in your sample.

3.

Make a note of your result and all the results from your lab. We will use these data later.

Label	ID	College	Label	ID	College
01	6626	CLA	28	8981	COAFES
02	8140	CNR	29	6771	CLA
03	6827	CLA	30	0226	CLA
04	5710	CLA	31	4790	CLA
05	7140	CLA	32	3382	CLA
06	9085	CLA	33	5377	CLA
07	9627	IT	34	3641	CLA
08	8129	CLA	35	2084	CLA
09	1549	IT	36	5194	CLA
10	7427	CLA	37	0969	CLA
11	6749	CLA	38	3927	CLA
12	7429	CLA	39	9820	CLA
13	9396	IT	40	4131	CLA
14	1083	CLA	41	4204	CLA
15	3015	CSOM	42	0444	CLA
16	7739	CLA	43	3773	CLA
17	7850	CLA	44	2578	CHE
18	8794	CLA	45	7354	CLA
19	3663	CLA	46	4631	IT
20	8614	CLA	47	3067	CLA
21	8946	IT	48	9428	COAFES
22	8070	CLA	49	6871	CLA
23	0038	CLA	50	6010	CLA
24	2937	CLA	51	2515	CLA
25	8717	CLA	52	6193	CLA
26	3494	IT	53	0957	CLA
27	8236	CLA

Results of Random Samples in Recitation 5

Distribution of the Class Among Home Colleges

CHE	CLA	CNR	COAFES	CSO	IT
1	42	1	2	1	6

Sampling Results

Lab 5

Lab 5

Value:	0.4	0.6	0.8	1.0
Count:	1	4	11	6

Value: 0.6	0.7	0.8	0.9	1.0
Count: 1	5	6	3	1

Sample mean: 0.8
Sample standard deviation: 0.163

Sample mean: 0.787
Sample standard deviation: 0.102