A company instituted a training program designed to minimize…
A company instituted a training program designed to minimize employee fraud. To see if the training worked, a business analyst conducted a hypothesis test testing: H0: The pre-training fraud and post-training fraud levels are the same. HA: The post-training fraud levels are lower than pre-training fraud levels. Based on the p-value of the t Stat, the business analyst fails to reject the null hypothesis even though post-training fraud levels were actually lower. What type of outcome is this?
Read DetailsA new business, CoolIT, sells items to keep you cool when ou…
A new business, CoolIT, sells items to keep you cool when outside. Its products include coolers, generators, floats, and other water accessories designed to beat the heat. It opened the store at the beginning of June. Management has asked the following question: Is the average sale during the first 100 days of business different than the average sale during the second 100 days of business? A business analyst used the Excel Data Analysis ToolPak to create the following hypothesis test. Should the business analyst conduct a one-tailed or two-tailed hypothesis test to evaluate management’s question? t-Test: Two-Sample Assuming Unequal Variances First 100 Sales Second 100 Sales Mean 624.0999 584.6295 Variance 565742.2231 667136.4119 Observations 100 100 Hypothesized Mean Difference 0 df 197 t Stat 0.355476884 P(T
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