Question

help me check my advanced algebra answers? will medla and fan! :D

Answer 1

1. If z is a standard normal variable, find the probability.

The probability that z is less than 1.13

0.8485
0.1292
0.8907
0.8708

Answer 2

@ganeshie8

Answer 3

i got C

Answer 4

simply check ur ztable

Answer 5

1.13 is 0.9082 so the closest to that would be c right?

Answer 6

C is wrong

Answer 7

dang

Answer 8

can you attach the ztable you're using ?

Answer 9

yes

Answer 10

i am using the positive side of it

Answer 11

You just read the next row.

Answer 12

the roaw before 1.13?

Answer 13

wait i was looking at 1.33 lol

Answer 14

_wow ok its D lol

Answer 15

http://prntscr.com/4lvkit

Answer 16

i think

Answer 17

you may use wolfram also
http://www.wolframalpha.com/input/?i=P%28X%3C1.13%29

Answer 18

wow .-.

Answer 19

The number of nails of a given length is normally distributed with a mean length of 5 in. and a standard deviation of 0.03 in. In a bag containing 120 nails, how many nails are less than 4.94 in. long?

about 16 nails
about 3 nails
about 19 nails
about 6 nails

Answer 20

i got c for this one too, you have to make a bell chat right?

Answer 21

C cannot be correct

Answer 22

this one was kind of hard for me