Mathematics, 28.10.2020 16:50 emmalucilleblaha1995
The population standard deviation for the heights of dogs, in inches, in a city is 7.5 inches. If we want to be 90% confident that the sample mean is within 2 inches of the true population mean, what is the minimum sample size that can be taken
Answers: 2
, where 
= critical z-value for confidence level , 
= population standard deviation , E = margin of error.
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The population standard deviation for the heights of dogs, in inches, in a city is 7.5 inches. If we...
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