On average, how long must customers wait in line before being served? Keep one decimal after rounding for your answer.

$4\mathrm{.}0$ minutes

$47\mathrm{.}9$ minutes

$21\mathrm{.}7$ minutes

$6\mathrm{.}7$ minutes

$0\mathrm{.}0$ minutes

a value different from all the above

Question $3$

On average, how many customers are in the hair salon? Keep one decimal after rounding for your answer.

$0\mathrm{.}1$

a number different from all the above

$2\mathrm{.}9$

$0\mathrm{.}9$

$1\mathrm{.}6$

$0\mathrm{.}4$