1) What is the probability that a value chosen from the standard normal distribu

Question

1) What is the probability that a value chosen from the standard normal distribution is less than -0.82? (Keep 4 decimals) Tries 0/4 2) What is the probablty that a value chosen from the standard normal distribution is greater than 1.92(Keep 4 decimals) Tries 0/4 3) what is the probability that a value chosen from the standard normal distribution is between .52 and 1.34?(Keep 4 decimals) Tries 0/4 4) Find Q3 for the standard normal distribution. (Keep 4 decimals) Tries 0/4 S) Find Q1 for the standard normal distribution. (Keep 4 decimals) Tries 0/4 6) Find median for the standard normal distribution (Keep 4 decimals) Tries 0/4 7) Find IQR for the standard normal distribution. (Keep 3 decimals) Tries 0/4 8) A soft drink machine discharges an average of 350 ml per cup. The amount of drink is normally distributed with standard deviation 25 ml. What fraction of cups will contain more than 390 ml? (Keep 4 decimals) Tries 0/4

Explanation / Answer

1) P(Z<-0.82)=0.2061

2) P(X>1.92) =0.0274

3) P(0.52<Z<1.34)=0.2114

4) for Q3 Z =0.6745

5) Q1 =-0.6745

6)median =0

7) IQR =Q3-Q1 =1.3490

8)

P(X>390)=P(Z>(390-350)/25)=P(Z>1.6) =0.0548

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