Continuous Probability

The mean temperature in Glens Falls for the month of February is 23 degrees with a standard deviation of 4.2 degrees. Approximately what percent of the days in February would be between 24 and 30 degrees?

• 35.8%

• 68.2%

• 0%

• 50%

Which represents the number of standard deviations from the mean for the 85th percentile?

• 2.58

• -2.58

• -1.04

• 1.04

Assuming the times follow a normal model, what is the probability that Night Sky can run a quarter mile in under 24.5 seconds?

• 0.1130

• 0.8870

• 0.0099

• -0.1130

Using the histogram what is the mean?

• 3.857

• 3.5

• 1.807

• 3

Find σ for the distribution.

• 3.857

• 1.807

• 3

• 1.5

What is the approximate shape of this distribution?

• Uniform

• Normal

• Skewed Left

• Skewed Right

• Discrete
• Continuous

• Discrete
• Continuous

• 0
• 0.1
• 0.5
• 0.05

• Yes, because all of the probabilities are between 0 and 1 inclusive and the sum of all the probabilities is 1.
• No, all probabilities are not be between 0 and 1 inclusive
• No, the sum of all the probabilities is not 1.
• Yes, because the distribution is symmetric