Stats Medic

The mean temperature in Glens Falls for the month of February is 23 degrees with a standard deviation of 4.2 degrees.  What is the z-score for a temperature of 17 degrees?  

• 1 

• 1.43

• -1.43

• 11.5

Find the area of the shaded region. 

• 0.1587

• 0.8413

• 0.6826

• 0.3413

Find the cumulative area that corresponds to a z-score of 1.25. 

• 0.89

• 0.01

• 0.79

• 0.12

Find the area under the standard normal curve to the right of z =1.36.

• 0.0869

• 0.9962

• 0.0008

• 0.1234

How is the data distributed in this histogram?

• Symmetrically

• Skewed Right

• Skewed Left

Choose the statistical question:

• What time did you wake up this morning?

• What time do 12th graders wake up each morning during the school week?

Find the area under the standard normal curve to the right of z = -2.67.

• 0.0869

• 0.9962

• 0.0008

• 0.1234

Find the area under the standard normal curve between z = -2.55 and z = 1.08. 

• 0.8545

• 0.7560

• 0.3110

• 0.2140

Fernando is 60 inches tall. The average height for his age and gender is 68 with a standard deviation of 10 inches. What percent of his peers are shorter than him?

• 46.81%

• 8%

• 78.81%

• 21.19%

The mean GPA of students in a course at UCDavis 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? 

• 81.85%

• 47.5%

• 68%

• 95%