Chapter 1. Simple Random Samples

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Stat Tutor
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1:08

Question 1.1

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Incorrect. A simple random sample is defined as a sample where every possible sample of size n has the same chance of being selected.
Correct. A simple random sample is defined as a sample where every possible sample of size n has the same chance of being selected.
Incorrect. Try again.
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Question 1.2

Incorrect. This is a correct statement.
Correct. This is a correct statement.
Incorrect. Try again.
2

1:29

Question 1.3

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
Incorrect. Selecting the top 50 names does not involve using a random device.
Correct. Selecting the top 50 names does not involve using a random device.
Incorrect. Try again.
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2:15

Question 1.4

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Incorrect. A fact about a random digit table is that it consists of the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 in random order.
Correct. A fact about a random digit table is that it consists of the numbers 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 in random order.
Incorrect. Try again.
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Question 1.5

5LH1kfIlzv8vPWD+HWJthXXeuAs7vfpslZQyJvHrr72GaTsY6QNfrbf0RzDn48aETbnsPC+TgaZhJVVx7SblnwnTdTv7Snoi/ZR7s7SNheFjXcMhc0bL57tRP2arb9wvArxQyg==
Incorrect. This is a correct statement.
Correct. This is a correct statement.
Incorrect. Try again.
2

Question 1.6

DqbYzK+F75jdbqNULwtgrbUnYnkKIrRT9HgzpZEf5IzG4rf+1T81tUGto46D874KrWxGSF0/JqwWN8erKrAODHkCNxrtnvzzUi6AfHjPdbQRlp4MlKAixYR6J4Jnn0/7qPJNe004zYIusTIB6hOpq3FkhijJ4dLvJcDDeA==
Incorrect. Knowledge of one part of the table gives no information about any other part.
Correct. Knowledge of one part of the table gives no information about any other part.
Incorrect. Try again.
2

Question 1.7

ySMkDnyKJ04/pc23h+CC02u5YzUTTh3aOJVa9/BUK3GlnbiyGcsHHc73pLViTXlQl8YXtrj90vaC/I/oCFWNG/7+PilWuarn6lCVpyBj1TcrVIbmBSjRru2xvRTBUuLYviKXx+Qzo25HlInG
Incorrect. Since all 10 digits are equally likely, each digit as probability of 1 in 10 of being selected.
Correct. Since all 10 digits are equally likely, each digit as probability of 1 in 10 of being selected.
Incorrect. Try again.
2

3:56

Question 1.8

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Incorrect. Since 50 is a two digit number, you should select two digits each time.
Correct. Since 50 is a two digit number, you should select two digits each time.
Incorrect. Try again.
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Question 1.9

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Incorrect. Since 777 is a three digit number, you should select three digits each time.
Correct. Since 777 is a three digit number, you should select three digits each time.
Incorrect. Try again.
2

Question 1.10

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Incorrect. To make 8 at two digit number, you have to add a zero to the front and make it "08."
Correct. To make 8 at two digit number, you have to add a zero to the front and make it "08."
Incorrect. Try again.
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Question 1.11

 1. Anna 5. Geoge 9. David 13. John 17. Tyler 2. Bryce 6.Tricia 10. Erica 14. Sharon 18. Jacob 3. Emily 7. Steven 11. Julie 15. Brooke 19. Joseph 4. Charles 8. Mark 12. Hannah 16. Elizabeth 20. Catherine
Table 1.1
 73196 69616 38312 39821 87358 10541 71970 39782
Table 1.2
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Incorrect. Since the students are labeled with two digits (#2 is 02), we have to use the random digits two at a time. 73 is not assigned, but 19 corresponds to Joseph.
Correct. Since the students are labeled with two digits (#2 is 02), we have to use the random digits two at a time. 73 is not assigned, but 19 corresponds to Joseph.
Incorrect. Try again.
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