**Waiting Times Analysis at Two Different Banks**The data below displays the waiting times (in minutes) of customers at two different banks:- **Bank A** has a single waiting line that feeds three teller windows.- **Bank B** allows customers to enter any one of three different lines that have formed at three teller windows.### Waiting Times Data- **Bank A:** 6.4, 6.6, 6.7, 6.8, 7.1, 7.3, 7.4, 7.9, 7.9- **Bank B:** 4.2, 5.3, 5.8, 6.2, 6.8, 7.6, 7.6, 7.6, 8.5, 9.3, 10.0### Analysis Task1. **Objective:** Construct a 90% confidence interval for the population standard deviation (σ) at Bank A.2. **Reference:** Consult the table of Chi-Square critical values for calculations.### Instructions- Calculate the 90% confidence interval for σ at Bank A, rounding to two decimal places as needed.- Use the provided checkboxes to input the minimum and maximum values of the confidence interval.This exercise aims to help students understand and apply statistical methods to real-world scenarios, enhancing their ability to analyze and interpret data systematically.

For Bank A, the given sample observations of waiting times are given as:6.4, 6.6, 6.7, 6.8, 7.1,…

Answered: The values listed below are waiting…

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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2. A.) Find the 5-number summary for the data. B.) Is the data discrete or continuous?
Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven. Full data set Car 1 216 243 205 242 239 297 295 172 270 251 165 310 265 316 278 Car 2 231 220 223 205 245 257 242 292 248 252 287 255 250 293 251 Median for Car 2 M=___________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 1 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Range for Car 2 R=__________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation for Car 1 s=_________mi / 10 gal (Type an integer or decimal rounded to one decimal place as needed.) Sample standard deviation…
Christine is a sales manager for a car rental company. She has a scatterplot with data regarding the years of experience of sales representatives and percent of satisfied customers. What information would the scatterplot below indicate? Select all that apply. 100 90 80 70 50 40 30 20 10 1 3 5 6 7 Years of Experience of Salesperson O Satisfaction rate is the independent variable. O Satisfaction rate is the dependent variable. O Years of experience is the independent variable. O Years of experience is the dependent variable. O Christine should consider customer satisfaction training for her more novice representatives. O There is a positive correlation between years of experience and customer satisfaction. O There is a negative correlation between years of experience and customer satisfaction. O There is no correlation between years of experience and customer satisfaction. Percent of Satisfied Customers
An engineer wants to determine how the weight of a gas powered car, x, affects gas mileage, y. The accompanying days represent the weights of various domestic cars and their miles per gallon in the city for the most recent model year. weight Miles per (pounds), x Gallon, y 3797 16 3897 16 2704 24 3608 20 3360 22 3040 22 3787 17 2618 24 3509 18 3798 16 3399 17 interpret the slope y-intercept, if appropriate. Choose the correct answer below for y hat = -0.00661x + 41.80 a) A weightless car will get ____ miles per gallon, on average. It is not appropriate to interpret the slope. b) for every pound added to the weight of the car, mileage in the city will…
The following data set are grades of students enrolled in Math 111. Dr. Glen, the professor for Math 111 wants to determine the following: Q3, D₂, D5, P45, and P85. Grades f cfb 91-94 6 77 87-90 15 71 83-86 10 56 79-82 15 46 75-78 8 31 71-74 9 23 67-70 10 14 63-66 4 4 TOTAL 77 use the formulas simmilar to the attached photo:
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Speed cameras (SC) are used to reduce the risk of accidents in accident-prone zones in metropolitan cities. To study the effectiveness of speed cameras, transport engineers would like to compare the average number of accidents in junction A (with SC) and junction B (without SC). The number of accidents in 105 weeks in two junctions are provided below. 6 7+ Number of Accidents 0 1 2 3 4 5 Observed frequency 40 20 15 16 10 3 1 0 Number of Accidents 0 1 2 3 4 5 6 7+ Junction B without SC Observed frequency 25 24 18 15 18 41 0 Junction A with SC Test the average number of accidents per week in junctions A and B are same at the 5% significance level.
Which of the following data are measured at interval level? a. The ranking of all lecturers in your course after they have been designated as excellent, good, satisfactory, and poor b. The classification of a lecturer as excellent, good, satisfactory, or poor c. Last week's average temperature in degrees Celsius d. The number of bottles of milk a family drinks in a month e. The time required to test each vaccine in a laboratory

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