8.15) I looked up 1.5 and got the probability .4332
ans=.4332
8.21) I looked up 1.4 and .6 on the z value sheet and added .4192 to .2257
ans= .6449
8.22) I took 1.44 and changed it to 1.44 and looked at the z values from 0 and got the
probability.
ans=
.0749
8.23) I took the number 2.03 and looked up the z value on the sheet and took the number from
the second row.
ans= .0212
8.27) I took .91 and .33 and looked up there values and subtracted them from each to get .1893
ans= .1893
8.32) I looked up the number .045 on the sheet and found that the answer was between 1.69 and
1.70 so I took the average and got 1.695
ans= 1.695
8.34) I took 145 and subtracted it by the mean then divided that number by the S.D. and got 2.25.
Then I looked up the z value and found the answer.
ans= .0122
8.36) I took 800 and 1100 and subtracted them by the mean two different times and then divided
them by the S.D and got .8 and .4. Once I found those numbers, I looked up the probabilities
and added them together to get the answer.
ans= .4435
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 Spring '08
 SandeepGoyal
 Probability, Prime number, Khmer numerals, Text figures

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