A cellular phone service provider has determined the number of devices per account has a probability distribution as follows. x=#devices 1 2 3 4 5 Probability 0.11 0.32 0.34 ?? 0.11 Answer probabilities to 2 decimal places. What is the probability of a randomly selected account having 4 devices? What is the probability of a randomly selected account having at least 3 devices? What is the probability of a randomly selected account having 2 or 4 devices?
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.
A cellular phone service provider has determined the number of devices per account has a
x=#devices | 1 | 2 | 3 | 4 | 5 | |
Probability | 0.11 | 0.32 | 0.34 | ?? | 0.11 |
Answer probabilities to 2 decimal places.
What is the probability of a randomly selected account having 4 devices?
What is the probability of a randomly selected account having at least 3 devices?
What is the probability of a randomly selected account having 2 or 4 devices?
What is the mean number of devices per account? 2 decimal places here!
What is the standard deviation of the distribution? Three decimal places here!
What is the probability that the number of devices in a randomly selected account lies within one standard deviation of the mean (inclusive) ?
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