What is the probability of .87 (highlight) using extrapolation and interpoliation method thenexplain.

Probability of finishing in 35 weeks (or less) is about 19% An entry in line table is the mumiou under the curve cumullud [mm the negative tail. z I an) m I40 99934 -3m I45 W ' 39 1&0 MID :3an :2 am - w W ' 375 '55 W :wo no am 3.55 um um 3-00 I30 om - 32.5 '35 0m .35, ton ham! - 145 In emu-4' _w mu own - 335 m 9m no no Oahu ' m \"a 099429 -3-10 an admin 1m: m 090779 '30 no 099028 an: m 09w!!- w 340 w :.m m M 4'80 159 am 235 m 0M ~13: 2:60 om '115 155 0% 17D 310 am