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SYM-506 MODULE 7 HW-1 - SYM 506 Applied Business...

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SYM 506 - Applied Business Probability & Statistics Horace W. Roberts, Sr Grand Canyon University Module Seven - Problem Set Week 7 P10 - 16 A) Lifetime One Variable Summary Brand 1 Batteries Mean 2.820 Conf. Intervals (Paired-Sample) fetime / Brand 1 Batteries - Lifetime / Brand 2 Batterie Sample Size 100 Sample Mean 0.5 Sample Std Dev 1.96 Confidence Level 95.0% Degrees of Freedom 99 Lower Limit -0.82 Upper Limit 1.89 B) Conf. Intervals (Paired-Sample) fetime / Brand 1 Batteries - Lifetime / Brand 2 Batterie Sample Size 100 Sample Mean 0.01 Sample Std Dev 2.58 Confidence Level 99.0% Degrees of Freedom 99 Lower Limit -1.25 Upper Limit 2.31 C) The way that our 95% and 99% confidence intervals can be related to on range of -0.8242 and 1.88502. The second confidence interval states tha simply based on the skewedness of the intervals, we see a stronger repr P10 - 22 A) Hypothesis Test (Paired-Sample fetime / Brand 2 Batteries - Lifetime / Brand 1 Batterie Sample Size 100 Sample Mean 0.53 Sample Std Dev 4.91 Hypothesized Mean 0.5 Alternative Hypothesis <.5 Standard Error of Mean 0.49 Degrees of Freedom 99 t-Test Statistic 0.0619 p-Value < 0.0001 Null Hypoth. at 10% Significance Reject Null Hypoth. at 5% Significance Don't Reject Null Hypoth. at 1% Significance Don't Reject B) Based on the data feedback, there appears to be a stronger argument in In favor of confidence interval testing is that in addition to establishing a
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