In a sample of 12 kids, their mean time on the internet on the phone was 3.9 hours
In a sample of 12 kids, their mean time on the internet on the phone was 3.9 hours
with a sample standard deviation of 0.7 hours. Which distribution would be most appropriate to use?
A. z distribution as the standard deviation always represents the population
B. Neither z nor t, as the population is not known to be normally distributed and there is a small sample
C. t distribution as the population is not normally distributed
D. t distribution as the data are assumed to be normally distributed
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