Binomial Distribution: Videos & Practice Problems

(a) $\mu =6.20$

(b) ${\sigma }^2=2.40$

(c) $\sigma =1.55$

(d) It is highly unusual to find more than $6$ employees blaming traffic for being late

(e) Values less than $5$ or greater than $8$ would be considered unusual

(a) $\mu =5.04$

(b) ${\sigma }^2=2.92$

(c) $\sigma =1.71$

(d) On average, about $5$ out of $12$ blame traffic for being late, with a typical variation of about $1.71$

(e) Values $0$, $1$, $9$, $10$, $11$, $12$ would be considered unusual

(a) $\mu =7.00$

(b) ${\sigma }^2=1.76$

(c) $\sigma =1.33$

(d) Every adult in the group is expected to blame traffic for being late

(e) Only the value $10$ is unusual

(a) $\mu =5.04$

(b) ${\sigma }^2=2.18$

(c) $\sigma =1.48$

(d) The variation in responses is too large to draw conclusions

(e) All values between $5$ and $10$ are unusual