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Math 1280 Final Exam/ Qs & Certified Ans.

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Math 1280 Final Exam/ Qs & Certified Ans. Using the value of x from the prior question, what is the SD of x? - Answer: 1.94 What is the probably that a randomly selected item from random variable L will be greater than 0 and less than or equal to 3? - Answer: .57 What is the expectation of random variable L? - Answer: 1.60 What is the variance of random variable L? - Answer: 14.58 You read a research paper that applies to your industry, and it says when people are given a list of facts about your product, they are more likely to buy your product and that the different between the regular amount of sales and the sales when people read the list of facts is 3 SDs. - Answer: Can not tell because the sample size is not given.

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Math 1280 Final Exam/ Qs & Certified
Ans.
Using the value of x from the prior question, what is the SD of x? -
Answer: 1.94


What is the probably that a randomly selected item from random
variable L will be greater than 0 and less than or equal to 3? - Answer:
.57


What is the expectation of random variable L? - Answer: 1.60


What is the variance of random variable L? - Answer: 14.58
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