$($Q$)$ Moodle $*292*D1$ Decision Analysis $-\frac{24}{M}Y$ Time left $1$: Consider the partial data set in the table represents online hours spent shopping by age and income. The average a standard deviation for the full data set is $$47,649$ and $$14,226,$ respectively. Using $z-$scores to standardize the observations, what will be the average of standardized Income for the three provided? $\backslash$table$[[$ID$,$Income,Age,$\backslash$table$[[$Ontine$],[$Hours$]]],[2201,75,000,50,2],[2202,49,000,49,5],[2203,59,000,39,5]]z_{ki}=\frac{x_{ki}-{\stackrel{}{x}}_k}{s_k}$ a$.0\mathrm{.}1040$ b$.0\mathrm{.}9387$ c$.1\mathrm{.}923$ d$.0\mathrm{.}6660$ Moodle Accessibility Specification Carolina University $($CCU$)$ does not discriminate on the basis of race, color, religion, sex, sexU