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1. A STAT 200 professor took a sample of 10 midterm exam scores

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1. A STAT 200 professor took a sample of 10 midterm exam scores from
a class of 30 students. The 10 scores are shown below: 95, 67, 76, 47, 85, 70, 87, 80, 67, 72 (a) What is the sample mean?
(b) What is the sample standard deviation? (Round your answer to two decimal places)
(c) If you leveraged technology to get the answers for part (a) and/or part (b), what technology did you use? If an online applet was used, please list the URL, and describe the steps. If a calculator or Excel was used, please write out the function.
2. Sara has eight new summer outfits. She plans to pack three of the new summer outfits in her trip to Tokyo.
(a) How many different ways can the three summer outfits be selected?
(b) Please describe the method used and the reason why it is appropriate for answering the question.

 
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