AP Statistics: CW p. 341: 5.9, 5.11, 5.13 – Choosing an SRS a random number table Choose an SRS in four steps: Step 1: Label. Assign a numerical label to every individual in the population. Step 2: Table. Use Table B to select labels at random. Step 3: Stopping Rule. Indicate when you should stop sampling. Step 4: Identify sample. Use the labels to identify subjects selected to be in the sample. In the following exercises, use the four steps described above to take samples using Table B, the random number digit table. In particular, write down the numbers you obtain from the table, and indicate for each number whether it is used or discarded. 5.9 Choose your sample You must choose an SRS of 10 of the 440 retail outlets in New York that sell your company’s products. How would you label the population? Use Table B, starting at line 105, to choose your sample. 5.11 Who goes to the convention? A club has 30 student members and 10 faculty members. The students are: Abel Fisher Huber Miranda Reinmann Carson Ghosh Jimenez Moskowitz Santos Chen Griswold Jones Neyman Shaw David Hein Kim O’Brien Thompson Deming Hernandez Klotz Pearl Utts Elashoff Holland Liu Potter Varga The faculty members are: Andrews Fernandez Kim Moore West Besicovitch Gupta Lightman Phillips Yang The club can send 4 students and 2 faculty members to a convention. It decides to choose those who will go by random selection. Use Table B, beginning at line 123, to choose a stratified random sample of 4 students and 2 faculty members. 5.13 California polling A poll of opinion in California uses random digit dialing to choose telephone numbers at random. Numbers are selected separately within each California area code. The size of the sample in each are code is proportional to the population living there. What is the name of this kind of sampling method? California codes, in rough order from north to south, are: 530 707 916 209 415 925 510 650 408 831 805 559 760 661 818 213 626 323 562 709 310 949 909 858 619 Another California survey does not call numbers in all area codes but starts with an SRS of 10 area codes. Choose an SRS using Table B and starting at line 111.
AP Statistics: CW – p. 341: 5.9, 5.11, 5.13 Choosing an SRS a random number table Choose an SRS in four steps: Step 1: Label. Assign a numerical label to every individual in the population. Step 2: Table. Use Table B to select labels at random. Step 3: Stopping Rule. Indicate when you should stop sampling. Step 4: Identify sample. Use the labels to identify subjects selected to be in the sample. In the following exercises, use the four steps described above to take samples using Table B, the random number digit table. In particular, write down the numbers you obtain from the table, and indicate for each number whether it is used or discarded. 5.9 Choose your sample You must choose an SRS of 10 of the 440 retail outlets in New York that sell your company’s products. How would you label the population? Use Table B, starting at line 105, to choose your sample. 5.11 Who goes to the convention? A club has 30 student members and 10 faculty members. The students are: Abel Carson Chen David Deming Elashoff Fisher Ghosh Griswold Hein Hernandez Holland Huber Jimenez Jones Kim Klotz Liu Miranda Moskowitz Neyman O’Brien Pearl Potter Reinmann Santos Shaw Thompson Utts Varga The faculty members are: Andrews Besicovitch Fernandez Gupta Kim Lightman Moore Phillips West Yang The club can send 4 students and 2 faculty members to a convention. It decides to choose those who will go by random selection. Use Table B, beginning at line 123, to choose a stratified random sample of 4 students and 2 faculty members. 5.13 California polling A poll of opinion in California uses random digit dialing to choose telephone numbers at random. Numbers are selected separately within each California area code. The size of the sample in each are code is proportional to the population living there. What is the name of this kind of sampling method? California codes, in rough order from north to south, are: 530 661 707 818 916 213 209 626 415 323 925 562 510 709 650 310 408 949 831 909 805 858 559 619 760 Another California survey does not call numbers in all area codes but starts with an SRS of 10 area codes. Choose an SRS using Table B and starting at line 111.
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