Learning Log 2-Section 1 You may use books/notes in doing this Learning Log. 20 points. 2. Chicken Delight claims that 90 percent of its orders are delivered within 10 minutes of the time an order is placed. A sample of 100 orders revealed that 82 were delivered within the promised time of 10 minutes. Is this a = evidence that the average delivery time is longer than promised? Use. .05 for the test. Ho: Ha: Decision Rule: Decision: Conclusion:
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
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