Assume the time it takes students to complete a certain test in elementary...

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luckyhunter

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...statistics is normally distributed? Assume the time it takes students to complete a certain test in elementary statistics is normally distributed with a mean of 45 minutes and a standard deviation of 5 minutes. Find the probability that if one of these students is randomly selected, he/she will:



a) Take more than 55 minutes to complete the test.
 
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