Daily high temperatures in St$.$ Louis for the last week were as follows: $95,94,93,94,95,86,90($yesterday$).$

a$)$ The high temperature for today using a $3-$day moving average $=90\mathrm{.}33$ degrees $($round your response to one decimal place$).$

b$)$ The high temperature for today using a $2-$day moving average $=88$ degrees $($round your response to one decimal place$).$

c$)$ The mean absolute deviation based on a $2-$day moving average $=$ degrees $($round your response to one decimal place$).$

$1\mathrm{.}7$ is not correct