SampHe Exaxmixnati*rs Six - La Jolla High School
SampHe Exaxmixnati*rs Six - La Jolla High School
SampHe Exaxmixnati*rs Six - La Jolla High School
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
138 Sarnple Examination <strong>Six</strong> Section tr<br />
15. Evan and Am1, are t$,o seniors in a local high school. The grades on a Calculus final<br />
which Evan took weie approximately normally distributed with a mean of 75 and a<br />
standard deviation of 7. The grades on a Fsycholog.v final rvhich Amy took were also<br />
approximatell, nonnallS' Cistributed .,vith a mean of 85 and a standard deviation of 4.<br />
Evair scored an 89 on the Calcuius finai while Arny scored a 91 on the Psl,chology final.<br />
Relative to tl-re students in each class. u4ro did better on the final?<br />
(A) Evari<br />
(B) Amy<br />
(C) Both r,r,ere the same<br />
(D) You canaot compare a matlr course to a science course<br />
(E) There is not enough information to ansrver this question<br />
16. The distribution of lengths of boa constrictors is approximately normalll'distributed. If<br />
11.5% of these snakes are more than 147 inches long and 2.3o/o are less than 139 inches<br />
long, what are the mean and variance of tl-re lengths of boa constrictors?<br />
@) It= 142,o2= 4.72<br />
(B) p=143,o2=2.5<br />
(c) lt= 143,o2 = 6.25<br />
(D) lJ = 144,O2 = 2.5<br />
(E) p= 144,o2 = 6.25<br />
zed copying or reusing<br />
any part of this Page is illegal.<br />
Answer<br />
EAnswer
Change language