A random sample of size 25 with mean 30 and variance 49 is selected from a normal distribution. A 95% confidence for the population mean is 30±3.84 none O 30±1.96 O 30±2.064 30±2.8896 O 30±2.744
A random sample of size 25 with mean 30 and variance 49 is selected from a normal distribution. A 95% confidence for the population mean is 30±3.84 none O 30±1.96 O 30±2.064 30±2.8896 O 30±2.744
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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Transcribed Image Text:A random sample of size 25 with mean 30
and variance 49 is selected from a normal
distribution. A 95% confidence for the population mean is
30±3.84
none
O 30±1.96
O 30±2.064
30±2.8896
O 30±2.744
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