AP Stat Review

What shape is a normal distribution curve?

• Half curve

• Round curve

• Bell curve

• Square curve

At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of 0.6. What is the GPA of the highest 2.5% of the students?

• 4.0 or higher 

• 4.1 or higher

• 4.7 or higher

• 4.5 or higher

Cans of Coca-Cola have a mean volume of 12 oz, with a standard deviation of .25 oz. What percent of cans have less than 11.5 oz of soda?

• 2.5%

• 2.28%

• 2.35%

• 2.42%

The mean GPA of students in a course at CSU is 3.2 with a standard deviation of 0.3. What percent of students in the course have a GPA between  2.9 and 3.8? 

• 81.9%

• 47.5%

• 68%

• 95%

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

Find the percentage of golfers that are between 30 and 46 years old.

• 68%

• 94%

• 95%

• 99.7%

What is the Normal Range (68%) of the annual precipitation for Phoenix, if the average is 29 with a standard deviation of 3?

• 26-32

• 3-29

• 26-29

• 39-32

According to the empirical rule, how much of the data falls within 3 standard deviations? 

• 25%

• 68%

• 95%

• 99.7%

According to the empirical rule, what percentage of data falls within 1 standard deviation? 

• 25%

• 68%

• 95%

• 99.7%

The distances male long jumpers for State College jump are approximately normal with a mean of 263 inches and a standard deviation of 14 inches.  
What percentage of long jumps will be between 240 and 262 inches?

• 39%

• 42%

• 57%

• 63%

The distances male long jumpers for State College jump are approximately normal with a mean of 263 inches and a standard deviation of 14 inches.
What is the minimum distance a male longer jumper needs to jump to be in the top 10% of all male long jumpers from State College?

• 0.4602 inches

• 245.06 inches

• 280.94 inches

• 281.77 inches