Question

Checkpoint: "Continuous Random Variables ScheduleAvsilable sow ue 0320100 AM IDT Question 1 The Incuhation period bor chicken eggs is rormally distribated wirh a mean of 492 hours ard standard deviation of apprasimarely 26 hoars Your frieed woald like to raise free-range chickens. So, she purchased fertilzed eggs and has been incubuning them for 583 hours shes beginning to woery that the ss are taking too long to hatch which ane of the following statemests is the best advice you can give your friend? - An incubotion peried of 583 hours is dehisitely abavw sverage since it is above the mean, But we should wait and see if any chicks will hatch There is a 5050 chance he iscubarien peried coule last leagee than average so a iscubation period af 343 hours is not seeprising n. Aa ncubation period af S83 hours in estrenely inlikely I s ikely the egs will nor hatch, c. Question2 Amarda ard Sen are in differens sathtins dosses Amanda scores a 15 on a quiz. Her cassnates have a mean of 20 and the scandard daviation of S on the qeia. Ren scores a 70 en a quiz His cleamanes have a meaa of 75 and a standard deviatien of 10 on the quic who id bener relative to their clasmatea A. O Amanda c Neither: they both perfeened the same relative to their clasmates Question 3 Soores on the Wechsler inteligence quotient (10) les ce somlly discribated with a mean score sf 100 and a standard deviatien of 15r points The US nilnary has misimam enlistment standards at about an 10 score of Rs.There have bees twa esperiments With lowering this to 80 but in both cases these recruits coald nat masier soldiering well enough oa justify the costs Based on 1Q scores only what perceatage o the propulation does not neet US miltary enistment standards? E016%

Answer 1

n= 583 hours、 炙= 3.64- ak: