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# Quiz1 - STA 2023 Quiz 1 Summer A 2011 May 18th 2011 There...

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STA 2023 - Quiz 1 / Summer A 2011 May 18th, 2011 There will NOT be any partial credit for the multiple choice questions. Good luck! Name: UFID: Each question is worth the same. 1. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What percent of people have an IQ of 130 or greater? 2. Suppose X represents the money paid in dollars for a hotdog. What type of variable is X? 3. Suppose the variance of the variable X from question 2 is 0.45. What is the standard deviation of X? 1

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4. Which of the following must be true if the standard deviation of a dataset is equal to 0? 5. Calculate the IQR of the following dataset: 2 5 7 8 11 6. Using the dataset from problem 5, how large would an observation have to be for that
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Quiz1 - STA 2023 Quiz 1 Summer A 2011 May 18th 2011 There...

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