Thanks to an initiative to recruit top students, an administrator at a college claims that this year's entering class mu
Posted: Mon Jul 11, 2022 11:25 am
Thanks to an initiative to recruit top students, anadministrator at a college claims that this year's entering classmust have a greater mean IQ score than that of entering classesfrom previous years. The administrator tests a randomsample of
11
of this year's entering students and finds thattheir mean IQ score is
114
, with a standard deviation of
9
. The college records indicate that the mean IQ score forentering students from previous years is
113
.
Is there enough evidence to conclude, at the
0.10
level of significance, that the populationmean IQ score,
μ
, of this year's class is greater than that of previousyears? To answer, assume that the IQ scores of this year's enteringclass are approximately normally distributed.
11
of this year's entering students and finds thattheir mean IQ score is
114
, with a standard deviation of
9
. The college records indicate that the mean IQ score forentering students from previous years is
113
.
Is there enough evidence to conclude, at the
0.10
level of significance, that the populationmean IQ score,
μ
, of this year's class is greater than that of previousyears? To answer, assume that the IQ scores of this year's enteringclass are approximately normally distributed.