The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence ad the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point?

The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence ad the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Predict the lung cancer index for men who worked in an occupation in England in which the smoking index was 129. What type of prediction did you just make? Explain What type of prediction did you just make? Explain
It is a 2 part question. How can we find normality?
The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feec three teller windows. At Bank B, customers may enter any one of three different lines that have formed at three teller windows. Answer the following questions. Bank A 6.3 6.6 6.7 6.8 7.1 7.3 7.5 7.8 7.8 7.8 Bank B 4.2 5.5 5.9 6.3 6.7 7.7 7.7 8.5 9.3 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 90% confidence interval for the population standard deviation o at Bank A. 0.40 min< OBank < 0.91 min (Round to two decimal places as needed.) A Construct a 90% confidence interval for the population standard deviation o at Bank B. min
A New York Times article titled For Runners, Soft Ground Can Be Hard on the Body considered two perspectives on whether runners should stick to hard surfaces or soft surfaces following an injury. One position supported running on soft surfaces to relieve joints that were in recovery from injury. The second position supported running on hard surfaces since soft surfaces can be uneven, which may make worse those injuries a soft surface was intended to help. Suppose we are given sufficient funds to run an experiment to study this topic. With no studies to support either position, which of the following hypotheses would be appropriate? The first position is more sensible, so this should be a one-sided test. In this case, we should form the alternative hypothesis around the second position. The second position makes the more sense, so this should be a one-sided test. In this case, we should form the alternative hypothesis around the first position. Because we would be interested in any…
Determine whether the following examples are discrete or continuous data sets. Write "DISCRETE" for discrete and "CONTINUOUS" for continuous. (without quotations - use for instance copy and paste to avoid typos) (a) The number of voters who vote Democratic. answer: (b) The number of customers waiting in line at the grocery store. answer: (c) The temperature in any given location. answer: (d) The length of time needed for a student to complete a homework assignment. answer:
Background information: Allison collected additional days of data to monitor the process. Steps to monitor using the control charts: Now monitor the process. An additional ten days of data have been collected, see table labeled “1st 10 Days of Monitoring Reservation Processing Time” in the Data File. Develop Xbar and R charts for the 1st 10 days of monitoring. Plot the data for the 1st 10 days on the Xbar and R charts. Is the process in control? If the control chart indicates an out-of-control process, note which days, the pattern, and whether it is the Xbar or R chart. Now that we have set up the control charts using enough data from a stable process, the 30 days of data, we will monitor the process. While monitoring the process, what will we use as the upper control limit for the R (range) Chart to compare against our new range values? Enter your response to three decimal places. You do not need to include the units (minutes), ONLY the numeric value. USE EXCELL DATA TO GET…
The following chart summarizes the complaints received at a catalogue sales call centre by day of the week. The chart shows percentages for each day. The complaints are classified as related to delivery (the order has not arrived), fulfilment (an item was missing from an order or not what was ordered), size (an item did not fit), and damage. Discuss: (a) Is the day of the week associated with the nature of the complaint? Explain why you think that these variables are or are not associated. (b) What supplemental information that is not shown by the chart is important to managers in charge of dealing with complaints?
Please see attached.
Reliable Furniture is a family business that has been selling to retail customers in the Oakville area for many years. It advertises extensively on radio and TV, emphasizing their its prices and easy credit terms. The owner would like to review the relationship between sales and the amount spent on advertising. Below is information on sales and advertising expense for the last four months. Ad Exp. Sales Rev. Month ($ in 000) ($ in 000) July 2 7 August 1 3 September 3 8 October 4 10 a) Determine the regression equation. b) Interpret the values of a and b. c) Estimate sales when $3 thousand is spent on advertising. Include the 95% confidence interval for average X d) Determine the coefficient of correlation.
Based on the line graph shown, how did Google's stock price perform between March 2015 and August 2015? Alphabet/Google (GOOG) closing stock prices 800 750 700 650 600 550 500 450 Date (A The stock price increased. (B) There is not enough information to make a determination. The stock price decreased. D) There was no change. Stock price (USD) 2-Mar-2015 1-Apr-2015 1-May-2015 1-Jun-2015 1-Jul-2015 3-Aug-2015 1-Sep-2015 1-Oct-2015 2-Nov-2015 1-Dec-2015 4-Jan-2016 1-Feb-2016 1-Mar-2016
The following data represent the monthly phone use, in minutes, of a customer enrolled in a fraud prevention program for the past 20 months. The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. What is the cutoff point? 361 543 355 353 460 408 494 517 324 542 424 353 307 388 318 369 532 516 308 483 The cutoff point is minutes. (Round to the nearest minute.)
Answer the following questions based on this data. Be sure to show all of your work for each question. What was the Group A mean walking time? By what percent did YOU exceed or fall below the group A mean? Express your answer rounded to the nearest hundredth. What was the Group B median walking time? By what percent did YOU exceed or fall below the group B median? Express your answer rounded to the nearest hundredth. Let’s suppose you want to draw a pie chart that shows information for the members of each group classified by a rating based on the amount of walking time. There will be 4 categories: excellent, very good, good, needs improvement. The Needs Improvement category is for the percentage of group members who walked for less than 600 minutes. Which group [A or B] has the larger percentage of members in the Needs Improvement category? What is that percentage? Express your answer to the nearest hundredth. One other way to look at the data is by…