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STAT 130 SAMPLE FINAL EXAM
Problems like the following will be included on the final exam. Your instructor may indicate other problem types that may also be included on the final exam.
Solutions: 1a 2c 3c 4d 5d 6c 7c 8d 9d 10a 11d 12a 13c 14c 15d 16c 17c 18b 19b 20c 21d 22a
23c 24b 25b 26c 27b 28c 29b 30b
1. In a poll of 500 workers at a certain company, 323 workers responded that they favor a proposal to emphasize fringe benefits rather than wage increases during their impending contract discussions. Determine the sample proportion, , of workers that favor the proposal.
a. 0.646 b. 0.323 c. 0.500 d. 0.754
2. One thousand people are screened for a certain disease and classified as in the following table.
Disease Status ------------------------------------------------ Age None Mild Moderate Severe Totals ---------------------------------------------------------------------------------- 18 – 40 213 51 33 23 320 Over 40 430 121 98 31 680 -------------------------------------------------------------------------------- Totals 643 172 131 54 1,000
If one individual is selected at random from this population, what is the probability of selecting someone who is in the 18 – 40 age group or has a severe form of the disease?
a. 0.286 b. 0.374 c. 0.351
Problems like the following will be included on the final exam. Your instructor may indicate other problem types that may also be included on the final exam.
Solutions: 1a 2c 3c 4d 5d 6c 7c 8d 9d 10a 11d 12a 13c 14c 15d 16c 17c 18b 19b 20c 21d 22a
23c 24b 25b 26c 27b 28c 29b 30b
1. In a poll of 500 workers at a certain company, 323 workers responded that they favor a proposal to emphasize fringe benefits rather than wage increases during their impending contract discussions. Determine the sample proportion, , of workers that favor the proposal.
a. 0.646 b. 0.323 c. 0.500 d. 0.754
2. One thousand people are screened for a certain disease and classified as in the following table.
Disease Status ------------------------------------------------ Age None Mild Moderate Severe Totals ---------------------------------------------------------------------------------- 18 – 40 213 51 33 23 320 Over 40 430 121 98 31 680 -------------------------------------------------------------------------------- Totals 643 172 131 54 1,000
If one individual is selected at random from this population, what is the probability of selecting someone who is in the 18 – 40 age group or has a severe form of the disease?
a. 0.286 b. 0.374 c. 0.351