A researcher is interested in estimating the average monthly salary of bank managers in Bulacan. He wants to be 99% confident that his estimate is correct. If the standard deviation is P8,500, how large a sample is needed to get the desired information and to be accurate within P1,150? *

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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A researcher is interested in
estimating the average monthly
salary of bank managers in
Bulacan. He wants to be 99%
confident that his estimate is
correct. If the standard deviation is
P8,500, how large a sample is
needed to get the desired
information and to be accurate
within P1,150? *
19
20
18
21
Transcribed Image Text:A researcher is interested in estimating the average monthly salary of bank managers in Bulacan. He wants to be 99% confident that his estimate is correct. If the standard deviation is P8,500, how large a sample is needed to get the desired information and to be accurate within P1,150? * 19 20 18 21
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