Question

Suppose that iQ scores have a bell-shaped distribution witha mean of 99 and a standard vaon of 12 using the empirical rule, what percentage of lQ scores are less thain 572 Please do ot round your anr

Answer 1

The gven that α bell-shopped distrib(sh on Tq sores have. bell- 99 and standard de oth er)4 2. with a mean empricat uue. (6s-95-) -to find oug we haง e ave los ttan 87' wor have bell- shopped distribuhm moon/ 63-75 87 By the em pivi cal Tute a57. data sit tnl stau dard deu-sen3uf 1.7zda sith tro

we have 1. e 2. 99 12 tv we kno hhenvemaina Par perfedly bell- flaaped distRxī but) tvon te the onl -taw 16. vally we qet 16% leis than 87 87