Purchase Solution

Busy Tellers - National Bank

Not what you're looking for?

Ask Custom Question

I got confussed with this one. So if you can help me out. Thank You

Busy Tellers. Prescott National Bank has six tellers available to serve customers. The number of tellers busy with customers at, say, 1:00 P.M. varies from daya to day and depends on chance, so it is a random variable, say, X. Past records indicate that the probability distribution of X is as shown in the following table.

x 0 1 2 3 4 5 6
P(X=x) 0.029 0.049 0.078 0.155 0.212 0.262 0.215

For example, the probability is 0.262 that exactly five of the tellers will be busy with customers at 1:00 P. M.; that is, about 26.2% of the time, exactly five tellers are busy with customers at 1:00 P. M. Use random-variables notation to represent each of the following events and then calculate the probabilities. At 1:00 P. M.,
(a) exactly four tellers are busy.
(b) At least two tellers are busy.
(c) Fewer than five tellers are busy.
(d) At least two but fewer than five tellers are busy.

Purchase this Solution

Solution Summary

The expert analyzes busy tellers in the national bank. The probability distribution is given.

Purchase this Solution

Free BrainMass Quizzes
Measures of Central Tendency

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

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.