Normal Distribution

The average waist size for teenage males is 29 inches with a standard deviation of 1.4 inch. 
If waist sizes are normally distributed, estimate the proportion of teenagers who will have waist   sizes greater than 31 inches?

• 92.4%
• 10.5%
• 16%
• 7.6%

Tags

CCSS.HSF-LE.A.1B

Pat and Chris both took a spatial abilities test (mean = 80, std. dev. = 8).  Pat scores a 76 and Chris scored a 94.  What percent of individuals would score between Pat and Chris? 

• 26.8%
• 96%
• 65.1%
• 4%

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.1

The weights of adult male beagles are normally distributed, with a mean of 25 pounds and a standard deviation of 3 pounds. A beagle is randomly selected. Find the probability that the beagle’s weight is less than 24 pounds.

• 0.3694
• 0.3781
• 0.0912

The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days.

About what percent of the products last between 12 and 15 days?

• 68%
• 34%
• 16%
• 2.5%

Tags

CCSS.HSF-LE.A.1B

1. The average age of a group of fans at a hockey game is 36 years with a standard deviation of 8 years. What percent of fans are between 20 and 28 years old?

• 34%
• 16%
• 13.5%
• 2.5%

The weights of adult male beagles are normally distributed, with a mean of 25 pounds and a standard deviation of 3 pounds. A beagle is randomly selected. Find the probability that the beagle’s weight is more than 28 pounds.

• 0.84
• 0.34
• 0.16
• 0.50

Tags

CCSS.HSS.ID.A.4

Dr. Seuss wrote about Horton the elephant. Where does Horton live?

• The Jungle of Nool
   
• the great plains
• the savannah
• the congo jungle