What is the standard deviation of the project completion time?

Group of answer choices

$19\mathrm{.}0000$

$3\mathrm{.}0000$

Flag question: Question $3$

Question $34$ pts

What is the standardized z$-$value for the value of $12?$ Use the expected project completion time and the standard deviation of the project completion time.

Group of answer choices

$0\mathrm{.}6667$

$9\mathrm{.}3368$

Flag question: Question $4$

Question $44$ pts

What is the variance of the project completion time?

Group of answer choices

$1$

$9$

Flag question: Question $5$

Question $54$ pts

What is the probability the project can be completed within $12$ weeks?

Group of answer choices

$1\mathrm{.}61\%$

$74\mathrm{.}86\%$

Question $64$ pts

What is the probability the project can be completed in more than $12$ weeks?

Group of answer choices

$25\mathrm{.}14\%$

$80\mathrm{.}61\%$