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In a random sample of 400 employees of a local company, 180 were female.
a. At 95% confidence using the critical value approach, determine if the proportion of females in the company is significantly less than 50%.
b. At 95% confidence using the p-value approach, test to determine if the proportion of females in the company is significantly less than 50%.
To test whether there is a significant mean difference among the three.
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The Starbucks in the Bauer College of Business found that 24% of customers purchase more than one cup of coffee per day from their shop. If 180 customers are randomly selected one day, what is the probability that no less than 25% of them purchase..
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What is the difference between a descriptive model that is developed using multiple regression analysis with time-series data and a model that is considered predictive?
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