# Normal Probability Distribution

Not what you're looking for?

The goal at U.S. airports handling international flights is to clear these flights within 45 minutes. Let's interpret this to mean that 95 percent of the flights are cleared in 45 minutes, so 5 percent of the flights take longer to clear. Let's also assume that the distribution is approximately normal.

a) If the standard deviation of the time to clear an international flight is 5 minutes, what is the mean time to clear a flight?

b)Suppose the standard deviation is 10 minutes, not the 5 minutes suggest in part a) what is the mean?

c) A customer has 30 minutes from the time her flight landed to catch her limousine. Assuming a standard deviation of 10 minutes, what is the likelihood that she will be cleared in time?

##### Purchase this Solution

##### Solution Summary

Answer to questions on Normal Probability Distribution. It calculates the mean time to clear a flight.

##### Solution Preview

a) If the standard deviation of the time to clear an international flight is 5 minutes, what is the mean time to clear a flight?

M +z*s=45minutes

where M = mean and

z coreesponds to 95%confidence 1 tailed test

or 5.00%level of significance (a (alpha) =0.05)

This is a 1 tailed test because we have the condition that 5 percent of the flights take longer to clear

95 percent of the flights are cleared in 45 minutes, so 5 ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

##### Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.