Some psychologists believe that a genius should be defined as anyone having an iq over 140. if the iq scores are normally distributed with a mean of 100 and a standard deviation of 13 and if the population of the world is 6,575,000,000, how many geniuses are there in the world today
a.7,232,500
b.24,985,000
c.123,000
d.115,000
e.536,000,000

24,985,000

Step-by-step explanation:

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true

i dont know