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PracticeExam2_2

# PracticeExam2_2 - STAT 200 B1 Exam 2 April 7 2010 Name...

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STAT 200 B1 Exam 2 April 7, 2010 1 Name _____________________________________ Netid _________________ Show all work in your answer booklet. There are 5 problems total. 1. Sonnets by a certain poet are known contain an average of μ = 8.9 new words (words not used in the poet’s other works). The standard deviation is σ = 2.5. A new manuscript with 6 sonnets has been discovered. The new sonnets contain an average of x = 10.2 words not used in the poet’s known works. Expecting a new author to use more new words, we test: 9 . 8 : 9 . 8 : 0 = μ a H H Give the z statistic and find its P-value. What do you conclude about the authorship of the new poems? 2. Eight nonobese adults, aged 25 to 36 years were fed 1000 calories per day in excess of the calories needed to maintain a stable body weight. The subjects maintained this diet for 8 weeks. Here are the weight gains (in kilograms) for the 8 subjects: 6.0 3.9 6.4 3.9 4.8 6.7 3.6 6.0 a) Compute the sample mean and standard deviation. b)

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PracticeExam2_2 - STAT 200 B1 Exam 2 April 7 2010 Name...

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