4. In a Bell System study made in 1961 regarding the dialing of calls between WhitePlains, New York, and Sacramento, California, the pmf of the number of trunks,X, required for a connection was found to bei12345Px (i).50 .30 .12.07 .01Determine the distribution function of X. Compute E[X], Var[X] and the modeof X. Let Y denote the number of telephone switching exchanges that this call hasto pass through. Then Y = X + 1. Determine the pmf, the distribution function,the mean, and the variance of Y.

Answer 4:- Given probability distribution of X i 1 2 3 4 5 Px(i) 0.50 0.30 0.12…

Answered: 4. In a Bell System study made in 1961…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 17 28 24 23 26 23 21 31 27 19 27 26 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use x=0.05.Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). The p-value is What is your conclusion? b. At the x=0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals). What conclusion can you draw after carrying out this test?
3. For a population with H = 60 and 0 = 12, find the z-score corresponding the following X values: X = 66
24) The Co-efficient is the: Group of answer choices d. all of the above b. numerical index of correlation a. value for correlation c. degree of the relationship
A random sample of 20 adults in a particular country were asked to state what type of birth control method they use. The results are in the table below. None None None Condom Condom Condom Pill Pill Other Other Pill Other Condom Condom Pill None Condom Pill Pill Other a) Since data were collected for variable(s), the correct graph to make is a . b) Complete the frequency/relative frequency table. Birth Control Type Frequency Relative Frequency None Condom Pill Other c) Which of the following is the correct bar chart for the given data? 2468Birth Control TypeFreqNoneCondomPillOther[Graphs generated by this script: setBorder(49,45,0,10); initPicture(0,13,0,8);axes(1000,2,1,1000,2); fill="blue"; textabs([165,0],"Birth Control…
2.3.1 Which is the highest level of measurement possible for each of the following variables? a. Daily high temperature for a given year in Chicago b. Marital status of the applicants for a particular job c. Class standings at a university (freshman, sophomore, etc.) d. Colors of roses e. Weights of all American-made cars f. Number in attendance per day at a particular high school g. Birthdays of people in a certain group
You are the administrator of a government agency. You have collected for a random sample of 51 households of 4 people and recorded data concerning their monthly household food expenditures during the month of July in 2022. The following data on the monthly household food expenditures per month are on the right starting in cell J4. a. Construct a frequency distribution in a table including percentages and cumulative percentages using "0 but less than 500" as the first class based on the Bins provided in column L. Use the space below. Show work. Monthly Food Expenditures ($) Bin Cell 1662 499.99 2698 999.99 2555 1499.99 1006 1999.99 982 2499.99 1445 2999.99 885 2094 922 1508 1443 1631 2624 1571 1611 705 867 1591 1633 1098 2061 930 1420 1970…
5. Find two z values, one positive and one negative, that are equidistant from the mean so that the areas in the two tails total the following values. a. 5% b. 10% c. 1%

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