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Math 147 - Fall 1997 - Final Exam
Answer Key
- Answer: (d)
- Answer: (b)
- Answer: (b)
- Answer: (e)
- Answer: (e)
- Answer: (d)
- Answer: (c)
- Answer: (b)
- Answer: (c)
- Answer: (d)
- Answer: (e)
- Answer: (a)
- Answer: (c)
- Answer: (d)
- Answer: (a)
- Answer: (b)
- Answer: (d)
- Answer: (c)
- Answer: (c)
- Answer: (e)
- Answer:
- 19.75%
- 51.77%
- 11.11%
- 3
- 1.56%
- Answer:
- Y = 4.4 x + 1060
- 1618.8
- 9.68%
- 102.0625 days
- Answer:
- Answer:
- 16.23% to 28.77%
- The following are the answers to part b:
- Use chi-square test with 2 d.f.
- Calculated chi-square is 1.76.
- P-value is between 50% and 30%.
- Draws seem to support her claim.
- Answer:
- Null Hypothesis: The monitors have an average life of 5000 hours.
- Alternate Hypothesis: The monitors have an average life of less than 5000 hours.
- Test Statistic: t-statistic with 9 degrees of freedom
- Value of test statistic: -1.77
- P-value: between 5% and 10%.
- Conclusion: The data supports the companies' guarantee.
- Answer:
- Control Group: Avg = 388.44 ppm; SEAvg = .55.
- Treatment Group: Avg = 391.004 ppm; SEAvg = .75.
- SEdiff = .93
- Value of z statistic: 2.75
- P-value: 0.30%.
- Conclusion: There is strong evidence against the null hypothesis that fat does not aid in calcium adsorption.
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