Scores of an iq test have a bell-shaped distribution with a mean of 100 and a standard deviation of 17. use the empirical rule to determine the following. (a) what percentage of people has an iq score between 66 and 134? (b) what percentage of people has an iq score less than 49 or greater than 151? (c) what percentage of people has an iq score greater than 117?

i really dont know

step-by-step explanation:

what is the question?

step-by-step explanation:

all three statements are true

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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