n1=12 and n2= 6
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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An investigator wishes to estimate the difference between two population mean lifetimes
of two different brands of batteries under specified conditions. If the population standard
deviations are both roughly 2 hr and the sample size from the first brand will be twice the
sample size from the second brand, what approximate values of the sample sizes will be
necessary if the probability that X, - X, is more than 1 is equal to 0.1587. Note that the
two populations have the same mean.
n1=48 and n2=24
None of these
O n1=12 and n2= 6
n1=24 and n2=12
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