EXERCISE 1 (Section 7.3/Exercise 18): Year in College

Listed below are the numbers of years it took for a random sample of college students to earn bachelor’s degrees (based on data from the National Center for Education Statistics).

4 4 4 4 4 4 4.5 4.5 4.5 4.5

4.5 4.5 6 6 8 9 9 13 13 15

Use SPSS to construct a 90% confidence interval estimate of the mean time required for all college students to earn bachelor’s degrees. Round your answer to the nearest hundredth. Does the confidence interval contain the value of 4 years? Explain.

EXERCISE 2 (Section 7.3/Exercise 22): Brain Volume

Listed below are brain volumes (in cm3) of unrelated subjects used in a study.

1005 963 1035 1027 1281 1272 1051 1079 1034 1070 1173 1079 1067 1104 1347 1439 1029 1100 1204 1160

The data set is stored in Data Set 6 in Appendix B (IQBRAIN.sav/Vol)

Use SPSS to construct a 99% confidence interval estimate of the mean of the brain volume of the population. Round your answers to the nearest integer. Given that typical brain volumes are between 950cm3 and 1800cm3, do these values appear to the typical?

Price: $5.21

Solution: The downloadable solution consists of 2 pages, 321 words.
Deliverable: Word Document