3. The number X of telephone calls received each minute at a certain switchboard in themiddle of a working day is thought to have a Poisson distribution. Data were collected,and the results were as follows:01 2 3Frequency 50 62 26 12(a) Find Â, the sample average for your dataset. Round your final answer to 3 decimals.x1(b) Find the probability of each z value (to 3 decimals) using the Poisson Distribution.Use your probabilities to determine the expected frequencies.(c) Perform a test to determine if the data follows a Poisson distribution. What con-clusion do you reach (is it reasonable that the data follow a Poisson distribution ornot)?

The observed frequency distribution of the number of telephone calls is given as…

Answered: 3. The number X of telephone calls…

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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To build a 95% CI for the mean of a population, you take a random sample and find these values: 18.4 19.8 17 18.6 23 21.7 18.9 14.3 17.6 21.2 21.4 23.4 20 20.7 15.2 21.9 21 What is the CI? Enter like this: (min,max) Be sure to use the parentheses or you will be marked wrong. Keep at least 3 decimals in all intermediate steps, and round your answer to two decimals. Submit Question
Suppose that speed at which cars go on the freeway is normally with 71 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places were possible.
Subpart A,B,C
About 23% of a population are of a particular ethnic group.240 people are randomly selected from this population.Round all answers to 3 decimal places.Convert the percentage of the population to a decimal:p: Compute the mean and standard of this size sample of this binomial distribution:Mean: Standard deviation:
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Take the following set of scores and construct a frequency distribution. You may want to copy and paste these questions into a separate document so you can answer them. Be sure to complete all of the columns labeled below, AND calculate N, ΣX, and ΣX2. Your numbers: 5, 3, 5, 5, 2, 1, 5, 1, 2, 1 X X2 f fX fX2 p p(100) cf c% N = ΣX = ΣX2 =
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