Suppose that the length of long distance phone calls, measured in minutes, is known to have an exponential distribution with the average length of a call equal to $10 minutes. a. The lambda of this distribution is 0.1 b. The probability that the length of a phone call is longer than 12 is P(x 2 12) = 0.3011942 c. The probability that the length of a phone call is shorter than 5 is P(x s 5) =0.3934693 - d. The probability that the length of a phone call is between 8 and 14 is P(8 s x s 14) = | e. The 86th percentile is a phone call that lasts minutes.
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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Given that the long distance phone calls, measured in minutes is known to have an exponential distribution with the average length of a call equal to $10 minutes.
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