Adam wants to know the mean number of minutes students commuting back and forth to school each day. he selects a sample of 5 students using the random digit table beginning on line 12 shown.
Line 12: 29621 66583 62966 12468 20345 14015 04014 35713 03980 03024
A. What is the sample size?
B. Adam assigns each student a two digit number beginning with 12 and ending with 30. Which students are chosen for the sample?
Sample size is 5
29 62 16 65 83 62 96 61 24 68 20 34 51 40 15 04 01 43 57 13 03 98 00 30 24
Reading from your list, these would be the numbers assigned to the students. You are supposed to pick the ones from 12 to 30. From left to right.. find the numbers between 12 and 30. Also, note 04 we have to write 4 as 04 because two digit numbers are assigned to each person.
Thanks a lot John!!
A. To determine the sample size, we need to count the number of values given in the random digit table. By observing line 12, we can see that there are 10 two-digit numbers provided: 29621, 66583, 62966, 12468, 20345, 14015, 04014, 35713, 03980, and 03024. Therefore, the sample size is 10.
B. To assign each student a two-digit number, Adam starts with 12 and ends with 30. Looking at the random digit table, we can see that there are 10 two-digit numbers provided. So, to determine the students chosen for the sample, we can match the two-digit numbers from Adam's assignment with the corresponding numbers in the random digit table.
Here are the students chosen for the sample based on the given random digit table:
12 - 29621
13 - 66583
14 - 62966
15 - 12468
16 - 20345
17 - 14015
18 - 04014
19 - 35713
20 - 03980
21 - 03024
Therefore, the students chosen for the sample are the ones corresponding to the two-digit numbers 12, 13, 14, 15, 16, 17, 18, 19, 20, and 21.