Question

Spring disk No till Spring Chisele Great Lakes Bt 32 30 33 35 34 34 30 26 29 32 25 29 30 32 26 28 31 29 28 32 27 30 29 27 2. Waiting for a Table. The following data represent the number of customers waiting for a table at 6:00pm on Saturday for 40 consecutive Saturdays at Bubba's restaurant. Select a random sample of these waiting times where n=5. Using your randomly selected sample of times, compute the sample variance and the sample st. deviation. Wait times N=40 11 6 3 14 11 CO A 13 13 91 mom + 00 600 oulu O 5 10 00 7 10 00 6 114 8 3. Computing the population z-score You are helping a young first time freshman friend register for college courses. The academic advisor asks to see your friend's entrance exam scores for the math portion of the test. Your friend took both the ACT and the SAT. She scored a 25 on the ACT math portion and 650 on the SAT math portion. In th math portion of the ACT, the p=20.7, with a standard deviation of 5. The math portion of the SAT has a 1514 with a standard deviation of 113 Which teet . fi

Answer 1

N	No. of Customers			Random n (using RANDBETWEEN (0,41)	No. of customers (x)	x-mean	(x-mean)^2
1	11			35	9	1.8	3.24
2	6			26	8	0.8	0.64
3	5			4	8	0.8	0.64
4	8			31	3	-4.2	17.64
5	11			27	8	0.8	0.64
6	6		Total		36		22.8
7	3		Mean	=36/5	7.2
8	7
9	4		Sample Variance
10	6		=sum of (x-mean)^2/n-1
11	5		=22.8/(5-1)
12	4		5.7
13	13
14	14		Sample Standard Deviation
15	9		=Sample Variance ^ 1/2
16	11		=5.7^(1/2)
17	13		2.39
18	8
19	10
20	10
21	9
22	9
23	6
24	5
25	10
26	8
27	8
28	8
29	7
30	7
31	3
32	8
33	7
34	8
35	9
36	6
37	10
38	11
39	4
40	8