Question $38(2\mathrm{.}5$ points$)$

Workers take five samples of size seven from a process. For each sample, they

compute the process mean. Those means are as follows: $12\mathrm{.}04,12\mathrm{.}04,12\mathrm{.}06,12\mathrm{.}09,$

and $12\mathrm{.}07.$ What is the grand mean?

Do not round interim calculations. Round your final answer to three decimal points.

Your Answer:

Answer

Question $39(2\mathrm{.}5$ points$)$

A product has a component that is prone to failure. As a result, it has two redundant

components. That is$,$ the overall component works if any of the three redundant

components works.

The reliability of the three components are: $0\mathrm{.}87,0\mathrm{.}86,$ and $0\mathrm{.}65.$ What is the

probability that the component will operate?

Round your answer to three decimal points. Enter $0\mathrm{.}010$ as $0\mathrm{.}010$ and not as $1\%.$

Your Answer:

HELP IM STUCK!!!