A random sample of student applicants who took the college entrance test is desired to be known. The population variance is known to be 27.4. Find the number of samples to be considered at 99% confidence level. Use E=1%.
A random sample of student applicants who took the college entrance test is desired to be known. The population variance is known to be 27.4. Find the number of samples to be considered at 99% confidence level. Use E=1%.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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write your answers legibly and follow the formulas indicated on the picture. thank you !
Transcribed Image Text:ormulae
sample eize
Z z seore
g alpha
Ō= standard dev
E =
2.
n =
95% =1.960
99% =2.575
error
for proportion 2
^^
n= pq l Ē
%3D
n=s ample rite
p-hat lpropor tion)
( l-p)
21 =' (901.,9s1.,99.%.)
Use 0.5
iF P is not
hat
E =
eror
2
E = ?¢ V
Transcribed Image Text:1) A random sample of student applicants who took the college entrance test is desired to
be known. The population variance is known to be 27.4. Find the number of samples to
be considered at 99% confidence level. Use E=1%.
In a surveu of 700
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