The amount of money spent on clothing by students on Stockholm University during 2021 can be...
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The amount of money spent on clothing by students on Stockholm University during 2021 can be modeled by a normal distribution with expected value of 1200 and variance of 40 000. The amount of money spent on course literature can be modeled by a normal distribution with expected value of 800 and variance of 18 000. The covariance between money spent on clothing and course literature is -24 000. 11. What is the probability that one student chosen at random spent more than 2000 on clothing plus course literature? 12. A random sample of ten students is selected. What is the probability that the mean expenditure on clothing is between 1150 and 1250? The amount of money spent on clothing by students on Stockholm University during 2021 can be modeled by a normal distribution with expected value of 1200 and variance of 40 000. The amount of money spent on course literature can be modeled by a normal distribution with expected value of 800 and variance of 18 000. The covariance between money spent on clothing and course literature is -24 000. 11. What is the probability that one student chosen at random spent more than 2000 on clothing plus course literature? 12. A random sample of ten students is selected. What is the probability that the mean expenditure on clothing is between 1150 and 1250?
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Data Analysis and Decision Making
ISBN: 978-0538476126
4th edition
Authors: Christian Albright, Wayne Winston, Christopher Zappe
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