Question: (n=12); Correlation (=0.987) A simple random sample of size (n <30) for a quantitative variable has been obtained. Using the normal probability plot, the correlation

$n=12$; Correlation $=0.987$

A simple random sample of size $n<30$ for a quantitative variable has been obtained. Using the normal probability plot, the correlation between the variable and expected $z$-score, and the boxplot, judge whether a t-interval should be constructed.

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