# Daily Archives: November 13, 2020

## What is the probability that the signal will exceed 224 V?

An analogue signal received at a detector, measured in micro volts, is normally distributed with mean of 200 and variance of 256.

(a) What is the probability that the signal will exceed 224 V?

(b) What is the probability that it will be between 186 and 224 V?

(c) What is the micro voltage below which 25% of the signals will be? d) What is the probability that the signal will be less than 240 V, given that it is larger than 210 V?

(e) Estimate the inter quartile range.

(f) What is the probability that the signal will be less than 220 V, given that it is larger than 210 V?

(g) If we know that a received signal is greater that 200 V, what is the probability that is in fact greater….

## obtain bounds which will include 95% of the downtime of all the customers

A manufacturer of a particular type of computer system is interested in improving its customer support services. As a first step, its marketing department has been charged with the responsibility of summarizing the extent of customer problems in terms of system failures. Over a period of six months, customers were surveyed and the amount of downtime (in minutes) due to system failures they had experienced during the previous month was collected. The average downtime was found to be 25 minutes and a variance of 144. If it can be assumed that downtime is normally distributed:

(a) obtain bounds which will include 95% of the downtime of all the customers;

(b) obtain the bound above which 10% of the downtime is included.

## Why are ambiguous business requirements the leading cause of system development failures?

Boundary conditions are statements about the line between true and false and do and do not. These statements may or may not be meant to include end points. For example, “We want to use method X when there are up to 10 pages, but method Y otherwise.” If you were building this system, would you include page 10 in method X or in method Y? The answer to this question will vary causing an ambiguous business requirement. 15

Questions

1. Why are ambiguous business requirements the leading cause of system development failures?

2. Why do the words  and  and  or  tend to lead to ambiguous requirements?

3. Research the web and determine other reasons for bad business requirements.

4. What is wrong with the following business requirement: “The….

## Create a template for a monthly budget of your income and expenditures

Financial Destiny

You have been introduced to Microsoft Excel and are ready to begin using it to help track your monthly expenses and take charge of your financial destiny. The first step is to create a personal budget so you can see where you are spending money and whether you need to decrease your monthly expenses or increase your monthly income.

Create a template for a monthly budget of your income and expenditures, with some money set aside for savings (or you can use the data file, AYK1_Data.xlsx, we created). Create variations of this budget to show how much you could save if you cut back on certain expenses, found a roommate, or got a part-time job. Compare the costs of a meal plan to costs of groceries…..

## Develop the look and feel—four weeks. Start working on graphics and HTML at the same time.

ou have just been hired as a business analyst by a new start-up company called Multi-Media. Multi-Media is an interactive agency that constructs phased and affordable website marketing, providing its clients with real and measurable solutions that are supported by easy-to-use tools. Since the company is very new to the business arena, it needs help in creating a project management plan for developing its own website. The major tasks for the development team have been identified but you need to create the timeline.

1.  The task names, durations, and any prerequisites are:

■ Analyze and plan—two weeks. Cannot start anything else until done.

■ Create and organize content—four weeks. Can start to develop look and feel before this is done.

■ Develop the look and feel—four weeks. Start….

## What is the major scientific flaw in this argument?

Ferdie is spending too much time playing softball and not enough time studying, so he signs up for “sportaholic therapy” (ST). The therapist tells him the cure for his “addiction” is to quit softball cold turkey and tap his temples three times whenever he feels the urge to play. After a few months, Ferdie announces that ST isn’t helping and he’s going to stop coming. The therapist gives him testimonials of clients who swear by ST, adding that Ferdie’s doubts are actually a sign that the therapy is working. What is the major scientific flaw in this argument? (Bonus: What kind of therapy might help Ferdie manage his time better

## Discuss how the changes toward women’s and men’s roles may have influenced nursing knowledge development.

Discuss how the changes toward women’s and men’s roles may have

influenced nursing knowledge development. What changes would you like to

see in the future that you believe could make an impact on advancing theoretical

thinking in nursing? Be specific in identifying changes and influences.

Q.15 :Identify and discuss one more constraint and one more force that may have influenced

the theoretical journey in the discipline. In what ways did the wave of the nursing

shortage in the 1980s and in 2000 support or constrain theoretical thinking? Why? Are there ways to influence the cycle of shortage and theoretical thinking?

## Identify the criteria used to evaluate the strength of the evidence for these practices.

An 18-year-old man is brought to the ED by his family, who report that he was “dinged” in a football game 1 week ago. The patient does not recall the event. His family states that he is sleeping more than usual and seems forgetful. What is the evidence base for conducting a comprehensive and focused evaluation for a patient with a sports concussion injury? What evidence-based recommendations may guide return to sports for this patient? Identify the criteria used to evaluate the strength of the evidence for these practices.

## Develop an assessment strategy and identify diagnostic studies that will benefit the patient.

An 80-year-old woman arrives at the ED by car after a fall down the stairs, colliding with the railing at the bottom. There is a bruise across her abdomen and lower chest. She is groaning loudly and seems confused. Although she complains of distinct abdominal and left shoulder pain, she cannot tell you what has happened or why she fell, where she is at present, or what day of the week it is, although she can tell you her full name. You note a shallow, rapid breathing pattern of 26 breaths/min; her systolic BP is 90 mm Hg; and her pulse rate is 70 bpm and regular. How would you prioritize the patient’s needs? Develop an assessment strategy and identify diagnostic studies that will benefit the patient. In….

## What would you do for the second patient regarding registration in the ED and management?

Two men choose to go ice fishing toward the end of the winter season. They are dressed in light clothing, including rubber fishing boots, as the weather has been warming and they expected the cabin to be warm. They did not notice the weather report of high humidity and wind. They spend the day fishing on the ice without moving much. On exiting the ice, one man splashes into the lake up to his hip. The other man now presents to the ED for treatment of frostbite of his feet. His friend has been massaging them en route to the ED, and the patient insists that this makes his feet feel better. You tell them to cease massage. You also notice that the second man is wet up….