Semester Exam Review Day 1

Why do we use z-scores

• because they are cool

• to standardize and compare data sets

• Ms. Bergan's favorite letter is z

Tags

CCSS.HSS.ID.A.4

Which are the same on a normal curve?

• Mean

• Median

• Mode

• Standard Deviation

• Range

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Which of the following terms describe a normal curve?

• Bell-Shaped

• Symmetric

• Unimodal

• Skew left

• Bimodal

What is the area under a normal curve?

• 1

• 99

• 95

• 68

Tags

CCSS.HSS.ID.A.4

Which numbers make up the Empirical Rule?

• 68%

• 95%

• 99.7%

• 50%

• 34%

Tags

CCSS.HSS.ID.A.4

The average heights of students is normally distributed with a mean of 60 in and a standard deviation of 4 inches. If Gavin is 66 inches tall, what percentage of students is Gavin taller than? Write your answer as a decimal, rounding to the fourth decimal place.

(a)  

Tags

CCSS.HSS.ID.A.4

If Steve is taller than 60% of students and Oscar is taller than 40% of students, what percent of students are between Steve and Oscar's heights? Write answer as a percent.

(a)  

Tags

CCSS.6.SP.B.5C

The average heights of students is normally distributed with a mean of 60 in and a standard deviation of 4 inches. Kendall is SHORTER than 93.7% of students. How tall is Kendall? Round to the nearest hundredth place.

(a)  

• 68%

• 95%

• 99.7%

• Not Enough Information

Tags

CCSS.HSS.ID.A.4

The mean life of a tire is 30,000km with a standard deviation of 2000km. 68% of tires will last between ________ km and ________ km.

• 24,000 and 36,000

• 26,000 and 34,000

• 28,000 and 32,000

• Not enough information

Tags

CCSS.HSS.ID.A.4