1. A random sample of enrollments from public institutions

of higher learning (with enrollments under 10,000) is

shown. Ata_0.10, test the claim that the mean

enrollments are the same in all parts of the country.

West Midwest Northeast South

3737 5585 9264 3903

3706 8205 4673 4539

2457 4170 7320 2649

4309 5440 5401 6414

4103 3355 6050 2935

5048 4412 4087 7147

2463 5115 1579 3354

8739 8669

2431

2. A random sample of enrollments from public institutions

of higher learning (with enrollments under 10,000) is

shown. Ata_0.10, test the claim that the mean

enrollments are the same in all parts of the country.

West Midwest Northeast South

3737 5585 9264 3903

3706 8205 4673 4539

2457 4170 7320 2649

4309 5440 5401 6414

4103 3355 6050 2935

5048 4412 4087 7147

2463 5115 1579 3354

8739 8669

2431

3. The numbers (in thousands)

of farms per state found in three sections of the

country are listed next. Test the claim ata_0.05 that

the mean number of farms is the same across these

three geographic divisions.

Eastern third Middle third Western third

48 95 29

57 52 40

24 64 40

10 64 68

38