问题12 Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. A recent survey of 8 private colleges in the United States revealed the following endowments (in millions of dollars 60.2. 47.0. 2351. 490.0, 122.6. 1775. 954. and 220.0. Summary statistics yield X_bar - 180.975 and S- 143.042 Calculate a 95% confidence interval for the mean endowment of all the private colleges in the United States assuming a normal distribution for the endowments. O a) S180 975: $94.066 O b) $180 975: S99123 O c) S180 975: S16.621 O d) S180975: S119586

问题12 Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. A recent survey of 8 private colleges in the United States revealed the following endowments (in millions of dollars 60.2. 47.0. 2351. 490.0, 122.6. 1775. 954. and 220.0. Summary statistics yield X_bar - 180.975 and S- 143.042 Calculate a 95% confidence interval for the mean endowment of all the private colleges in the United States assuming a normal distribution for the endowments. O a) S180 975: $94.066 O b) $180 975: S99123 O c) S180 975: S16.621 O d) S180975: S119586

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)

6th Edition

ISBN:9781337111348

Author:Bruce Crauder, Benny Evans, Alan Noell

Publisher:Bruce Crauder, Benny Evans, Alan Noell

Chapter3: Straight Lines And Linear Functions

Section3.3: Modeling Data With Linear Functions

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