To avoid unpleasant surprises when the statement comes, you try to record all your credit card transactions in a ledger. Unfortunately, you tend to neglect recording about 5% of your purchases. Suppose that last month, you had 25 purchases on your credit card account. When the statement arrives, you count the number of purchases you forgot to record. The random variable X represents the number of unrecorded purchases in a month with 25 transactions. Find the probability that exactly 4 purchases would have been unrecorded. binomcdf(25, .05,4)= 2137 binompdf(25, .05,4)=.0269 1-binompdf(25, .05,4)=.9731 1-binomcdf(25, .05,4)=.7863

To avoid unpleasant surprises when the statement comes, you try to record all your credit card transactions in a ledger. Unfortunately, you tend to neglect recording about 5% of your purchases. Suppose that last month, you had 25 purchases on your credit card account. When the statement arrives, you count the number of purchases you forgot to record. The random variable X represents the number of unrecorded purchases in a month with 25 transactions. Find the probability that exactly 4 purchases would have been unrecorded. binomcdf(25, .05,4)= 2137 binompdf(25, .05,4)=.0269 1-binompdf(25, .05,4)=.9731 1-binomcdf(25, .05,4)=.7863

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

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Question

To avoid unpleasant surprises when the statement comes, you try to record all your
credit card transactions in a ledger. Unfortunately, you tend to neglect recording
about 5% of your purchases. Suppose that last month, you had 25 purchases on your
credit card account. When the statement arrives, you count the number of purchases
you forgot to record. The random variable X represents the number of unrecorded
purchases in a month with 25 transactions.
Find the probability that exactly 4 purchases would have been unrecorded.
binomcdf(25, .05,4)= 2137
binompdf(25, .05,4)=.0269
1-binompdf(25, .05,4)=.9731
1-binomcdf(25, .05,4)=.7863

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