Computing of probability using z score

Reference no: EM13103040

The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation of 6. Find the percentage of students that scored above 70.

15.9

50.0

84.1

23.1

Find the standard deviation of the given probability distribution.

x P(x)

0 0.24

1 0.01

2 0.12

3 0.16

4 0.01

5 0.14

6 0.11

7 0.21

2.62

4.45

6.86

2.25

Reference no: EM13103040

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