Mathematics, 25.07.2019 00:50 preservations
Suppose you are dog breeder and you want to use a confidence interval to estimate the true mean fertility levels of purebred cocker spaniels. it is known that the distribution of fertility levels of cocker spaniels is normal. how many measurements must you have in order to be sure the sampling distribution of x¯ {"version": "1.1","math": "\bar{x}"} is normal?
Answers: 1
and standard deviation 
, a large sample size, of at least 30, can be approximated to a normal distribution with mean 
.
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Suppose you are dog breeder and you want to use a confidence interval to estimate the true mean fert...
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