A college admissions officer sampled 120 entering freshmen and found that 42 of them scored more than 30 on the ACT. Construct a 95% confidence interval for the proportion of all freshmen at this college who scored more than 30 on the ACT.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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alt
A college admissions officer sampled 120 entering freshmen and found that 42 of them scored more than 30 on the
ACT. Construct a 95% confidence interval for the proportion of all freshmen at this college who scored more than 30
on the ACT.
9
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Transcribed Image Text:s alt A college admissions officer sampled 120 entering freshmen and found that 42 of them scored more than 30 on the ACT. Construct a 95% confidence interval for the proportion of all freshmen at this college who scored more than 30 on the ACT. 9 a Z W S X 3 12889886HBE 7 e d $ C 4 UUD % f 5 t 6.0 g b fp y h n j 0 * m k alt р { ctri [ ? I
s
alt
A college admissions officer sampled 120 entering freshmen and found that 42 of them scored more than 30 on the
ACT. Construct a 95% confidence interval for the proportion of all freshmen at this college who scored more than 30
on the ACT.
9
a
Z
W
S
X
3
12889886HBE
7
e
d
$
C
4
UUD
%
f
5
t
6.0
g
b
fp
y
h
n
j
0
*
m
k
alt
р
{
ctri
[
?
I
Transcribed Image Text:s alt A college admissions officer sampled 120 entering freshmen and found that 42 of them scored more than 30 on the ACT. Construct a 95% confidence interval for the proportion of all freshmen at this college who scored more than 30 on the ACT. 9 a Z W S X 3 12889886HBE 7 e d $ C 4 UUD % f 5 t 6.0 g b fp y h n j 0 * m k alt р { ctri [ ? I
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