Module 7 - interval for the difference between the mean...

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Unformatted text preview: interval for the difference between the mean lifetimes of brand 1 and brand 2 batteries. Based on this confidence interval, which brand should the buyer purchase? interval for the difference in the mean lifetimes of brand 1 and brand 2 batteries. Based on this confidence interval, which brand should the buyer purchase? to hypothesis testing? Battery 1 Battery 2 Difference Mean 100.090 99.559 0.53 Variance 7.96 39.77 Sample Size 100 100 S D 2.821 6.306 S E 0.69 Tabulated values 95% 1.96 99% 2.58 A. 95% Confidence interval Lower Value Upper Value-0.82 1.88 Due to the fact that we are setting up this experiment in way where we have a null hypothesis and an alternative hypothesis my response in question "c" will give reason at which CI at what ever percentage gives more evidence to support which battery B. 99% Confidence interval Lower Value Upper Value-1.25 2.31 a. Using the given sample data, generate a 95% confidence b. Using the given sample data, generate a 99% confidence c. How can your analyses in parts a and b be related Due to the fact that we are setting up this experiment in way where we have a null hypothesis and an alternative hypothesis my response in question "c" will give reason at which CI at what ever percentage gives more evidence to support which battery C. If the test statistics value lies in the CI then we are not able to reject null hypothesis Important Info Highlited in vario At 95% Brand of Batteries 1 Battery Lifetime Correlation Table Data Set #1 Data Set #1 Battery 1.000 0.000 Lifetime Err:509 1.000 Battery Lifetime Covariance Table Data Set #1 Data Set #1 Battery Err:509 0.000 Lifetime Err:509 Err:509 Brand of Batteries 2 Battery Lifetime Correlation Table Data Set #2 Data Set #2 Battery 1.000 0.000 Lifetime Err:509 1.000 Battery Lifetime Covariance Table Data Set #2 Data Set #2 Battery Err:509 0.000 Lifetime Err:509 Err:509 Important Info Highlited in vario At 99% Brand of Batteries 1 Battery Lifetime Correlation Table Data Set #1 Data Set #1 Battery 1.000 0.000 Lifetime Err:509 1.000 Battery Lifetime Covariance Table Data Set #1 Data Set #1 Battery Err:509 0.000 Lifetime Err:509 Err:509 Brand of Batteries 2 Battery Lifetime Correlation Table Data Set #2 Data Set #2 Battery 1.000 0.000 Lifetime Err:509 1.000 Battery Lifetime Covariance Table Data Set #2 Data Set #2 Battery Err:509 0.000 Lifetime Err:509 Err:509 Information Needed Lifetimes of Randomly Selected Bra ous colors Battery Lifetime Brand of Batteries 1 1 99.11 Lifetime 2 99.45 Conf. Intervals (One-Sample) Data Set #1 3 98.39 Sample Size Err:509 4 97.07 Sample Mean Err:509 5 99.97 Sample Std Dev Err:509 6 100.06 Confidence Level (Mean) 95.0% 7 98.20 Degrees of Freedom Err:509 8 98.13 Lower Limit...
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Module 7 - interval for the difference between the mean...

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