Requires Respondus LockDown Browser $+$ Webcam $1$:$39$:$07$ remaining sestion $1(1$ point$)$ For this density curve, what percent of the observations lie between $1\mathrm{.}25$ and $1\mathrm{.}75?$ a$.0\mathrm{.}25\%$ b$.12\mathrm{.}5\%$