Tri-State Bank is investigating the processing time for loan applications. Samples were taken for 25 random days from fourbranches. These data can be found in the table below.DayBranch 1Branch 2Branch 3Branch 4DayBranch 1Branch 2Branch 3Branch 478 9 10 11 12 1328 14 11 26 26 20 26 1310 24 1525 20 22 28 25 29 20 35 33 22 31 26 23812 319 12 2142415 13 18 1413 224 14 12 75 6916 14 19 29 18 913an1122 18~ co81415 16 17 18 19 2024 2510 30 24 1012 11 31 23 723 924 30 12 22 31 20 3315 22 23 23 6 9 11 19 17 21 22 5918 20 815 2518 37 4412 14 18 10 20 13 912 32What is the overall mean? Do not round intermediate calculations. Round your answer to three decimal places.21 22 1921 22 23What is the average range? Do not round intermediate calculations. Round your answer to three decimal places.Compute the control limits for x- and R-charts. Use the control chart factors in Appendix B to answer the questions. Do notround intermediate calculations. If your answer is zero, enter "0". Round your answers to three decimal places.For the x-chart: What is the average range? Do not round intermediate calculations. Round your answer to three decimal places.Compute the control limits for x- and R-charts. Use the control chart factors in Appendix B to answer the questions. Do notround intermediate calculations. If your answer is zero, enter "0". Round your answers to three decimal places.For the x-chart:LCLx:UCLX:For the R-chart:LCLR:UCLR:

Given data: Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Branch 1 19…

Answered: Tri-State Bank is investigating the…

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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In order to compare two statistics textbooks, Mr.Marin recommends one book to one class and another book to another class. At the end of the year the classes are each examined; the results out of 100 marks are detailed below.Textbook 144 52 95 76 13 94 83 72 55 81 22 25 64 72 35 48 56 59 84 98 84 21 35 69 28Textbook 265 72 48 63 68 59 68 62 75 79 81 72 39 55 58 52 82 79 55 64 53 58 59 64 66 68 42 37(i) Calculate the mean and standard deviation for each class. (ii) Which class performed better?(iii) Which class was more consistent? (iv) Compute the coefficient of variation for each class. Comment on the results.(v) Construct a stem and leaf for each class.(vi) Compute their lower quartile, upper quartile, interquartile range and median for each class.(vii) Using a graph paper, draw a box and whisker plot for each class. Showing all parameters. Commenting on the distribution of the data set. Hence indicate whether there are outliers.
A samll town installed a Blue streetlights, in part, to help reduce crime in particular areas. The city collected the number of property crimes along nine randomly selected streets in the month before and after the Blue light installation, and claims that crime has been reduced.The number of crime data is shown in the table. No before Blue Light After Blue Light 1 17 14 2 25 20 3 10 14 4 14 12 5 16 8 6 34 35 7 32 27 8 21 18 9 14 12 a. Specify the competing hypotheses to test the s,all town's claim.b. Calculate the value of the relevant test statistic and find the critical value at the 5% significance level.c. Does the evidence support the small town's claim at the 5% significance level?
The annual update of U.S. Overseas Loans and Grants, informally known as the “Greenbook,” contains data on U.S. government monetary economic and military assistance loans. The following table shows military assistance loans, in thousands of dollars, to a sample of 10 countries, as reported by the U.S. Agency for International Development. 102, 69, 280, 180, 33, 89, 1643, 205, 177, 695 The sample size is needed in order to obtain a 95% margin of error of no more than 100 is
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A researcher wants to investigate whether the education level is related to his or her place of residence. Hundred's people were selected randomly. The results are given as follow. Area * Education Level Crosstabulation Education Level Bachelor's SPM Diploma Degree Total Area Urban Count 22 10 18 50 Expected Count 25.0 8.0 17.0 50.0 Rural Count 28 16 50 Expected Count 25.0 8.0 A 50.0 Total Count 50 16 34 100 Expected Count 50.0 16.0 34.0 100.0 Chi-Square Tests Value df Pearson Chi-Square в 2 Likelihood Ratio 1.850 2 Linear-by-Linear Association .778 1 N of Valid Cases a. O cells (0.0%) have expected count less than 5. The 100 minimum expected count is 8.00. a) State a reason of choosing the Chi-Square Test of Independence for this study. b) Calculate the values of A and B. c) At the 5% significance level, test whether education level is associated to his or her place of residence.
A district health officer wishes to determine if the six villages in his district are independent of residents contracting malaria, schistosomiasis, cholera or tuberculosis. Identity an appropriate statistical test and the tail of the test for the problem. Assume all samples used for study come from a normal population.
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The Department of Statistics Malaysia (DOSM) conducted another study on the monthly grossincome (in RM) in Malaysia for 2017. Another four states are selected and the data obtained areshown in Table 2. The Boxplot of the data is given in Figure 1
USH Financial is examining the use of its midtown ATM machine. The numbers of transactions made per day at this ATM during the past 8 days are as follows: 65, 92, 63, 90, 85, 69, 54, 96 Send data to calculator (a) What is the mean of this data set? If your answer is not an integer, round your answer to one decimal place. (b) What is the median of this data set? If your answer is not an integer, round your answer to one decimal place. O zero modes (c) How many modes does the data set have, and what are their values? Indicate the number of modes by clicking in the appropriate circle, and then indicate the value(s) of the mode(s), if applicable. O one mode: O two modes: and ?
SIS Travel Agency, a nation wide local travel agency, offers special rates on summer perlod. The owner wants additional information on the ages of those people taking travel tours. A random sample of 50 customers taking travel tours last summer revealed these ages. 18 29 37 42 47 49 53 57 61 67 19 31 38 44 48 50 54 58 62 68 24 34 39 45 48 51 54 58 63 70 27 36 39 46 48 51 55 59 64 74 28 36 40 46 49 52 56 60 66 77 B. Determine the P15, P22, , P55, P77 of the frequency distribution and construct the graph.
IBL Company manager asked his statistic team to give to the production department the data on the number of phones manufactured over the 17 months.. The data collected are as follows: Months 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 REQUIRED # of phones produced 2045 1566 1207 4563 5052 3465 2542 4134 3567 5163 4563 7453 2621 4772 4563 5052 2846 1. Calculate the following using the data provided on the table: a. the mean b. median c. mode 2. Find the Quartile 1, Quartile 3 and inter-quartile of the phones produced 3. Why is the quartile important? What purpose does it serve? 4. Why is median preferred to mean in certain circumstances? 5. How do we call data when Mode >Median >Mean and show with a diagram how such distribution looks? 6. Explain and compare parameters and statistics.

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