Question

What is the probability that a data value in a normal distribution is between a z-score of -1.32 and a z-score of 0.94? Round your answer to the nearest tenth of a percent.

A. 90.9%
B. 58.1%
C. 34.9%
D. 73.3%

Answer 1

i dont spose you have a ti83 handy

Answer 2

no...i have a ti-34 lol

Answer 3

does it have a "VARS" button by chance?

Answer 4

stat var

Answer 5

no,just a memvar and statvar ... :(

Answer 6

oh yeah a statvar :D

Answer 7

hit statvar

Answer 8

read me the menu under statvar

Answer 9

it comes up with erroer

Answer 10

error

Answer 11

lol, bad button!

Answer 12

im on the last 10 questions of this quiz and its the hardest one !

Answer 13

im guessing its about 73, but thats without any calculations to back it up

do you have a z table?

Answer 14

i do not....lol this calc sucks :(

Answer 15

empirical rule is that 68% of the data is wrapped about the mean, and this is close to that ; 73 seems most reasonable to me

Answer 16

68% is within +- 1 sd of the mean

Answer 17

well thank you for helping :)

Answer 18

youre welcome