Chapter 5.1 and 5.2 Review

Find the probability using the standard normal distribution.

 $P\left(z<1.49\right)$  

• 0.0681

• 0.6879

• 0.9319

• 0.3121

Find the probability using the standard normal distribution.

 $P\left(z\ge-2.31\right)$  

• 0.0104

• 0.9896

• 0.0087

• 0.9913

Find the probabiliy using the standard normal distribution.

 $P\left(-2.14<z<0.95\right)$  

• 0.1170

• 0.0681

• 0.1873

• 0.8127

μ = 70 , σ = 8 , X = 50 . Find z score

• 2.5
• -2.5
• 5.2
• -5.2

Tags

CCSS.HSS.ID.A.4

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability a randomly seleced person has an IQ score greater than 120

• 0.9082

• 0.0918

• 0.6293

• 0.3707

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the Probability a randomly selected person has an IQ score between 100 and 120.

• 0.4082

• 0.9082

• 0.0918

• 0.5918