Hi all:
I met a question about lmer.

fm1 <- lmer(Reaction ~ Days + (Days|Subject), sleepstudy)
summary(fm1)

...

Fixed effects:
            Estimate Std. Error t value
(Intercept)  251.405      6.825   36.84
Days          10.467      1.546    6.77

...

My question:
Why p values of (Intercept) and Days are not given?


Many thanks!

Best.

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