Problem $10-26($Algo$)$

As part of an insurance company's training program, participants learn how to conduct an analysis of

clients' insurability. The goal is to have participants achieve a time in the range of $32$ to $47$ minutes.

Test results for three participants were the following: Armand, a mean of $37\mathrm{.}0$ minutes and a standard

deviation of $3\mathrm{.}0$ minutes; Jerry, a mean of $37\mathrm{.}0$ minutes and a standard deviation of $3\mathrm{.}0$ minutes; and

Melissa, a mean of $39\mathrm{.}5$ minutes and a standard deviation of $2\mathrm{.}8$ minutes.

a$.$Compute process capability for the participants and determine whether each is capable. $($Do not

round intermediate calculations. Round your answers to $2$ decimal places.$)$

Answer is complete but not entirely correct.

Help me find the answer to Armand, use excel to explain and show work. Thank you!