Question

How much area under the normal curve lies between the mean and a z-score of 1.30?

0.4032%

40.32%

50%

9.68%

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Question 224 pts

The standardized normal curve always has a mean of _____ and a standard deviation of _____.

50,2

0,1

68,1

1,0.5

Answer 1

Solution :

Using standard normal table,

P( 0 < Z < 1.30) = P(Z < 1.30) - P(Z < 0) = 0.9032 - 0.5 = 0.4032

Area = 40.32%

The standardized normal curve always has a mean of 0 and a standard deviation of 1 .

Answer = (0 , 1)