Kimanichelsea20

In which of these cases should the median be used? When the data has small variance When data has no outliers When the data has extreme values When the data has nominal values RATIONALE Since the mean uses the actual values in the data, it is most affected by outliers and skewness. So, we only want to use the mean when the data is symmetric as a measure of centrality. When the data is skewed or has extreme values, the median is a better measure since it is not as sensitive to these value...

Which of the following is a property of binomial distributions? All of the observations made are dependent of each other. There are exactly four possible outcomes for each trial. The expected value is equal to the number of successes in the experiment. The variable of interest is the total number of successes or failures for a given number of observations. RATIONALE Recall that for the binomial distribution we are concerned with an event occurring (successes) or not occurring (failures) in...

For ten students, a teacher records the following scores of two assessments, Quiz 1 and Test. Quiz 1 (x) Test (y) 15 20 12 15 10 12 14 18 10 10 8 13 6 12 15 10 16 18 13 15 Mean 11.9 14.3 Standard Deviation 3.3 3.5 The correlation of Quiz 1 and Test is 0.568. Given the information below, what is the slope and y-intercept for the least-squares line of the Quiz 1 scores and Test scores? Answer choices are rounded to the hundredths place. Slope = 0.54 y-intercept = 1.71 Slope = 0....

1.5% for each tail. The lower tail would be at 0.015 and the upper tail would be at (1 - 0.015) or 0.985. The value of 0.9850 is actually on the z-table exactly. 0.9850 corresponds with a z-score of 2.17. CONCEPT Confidence Intervals 2 George measured the weight of a random sample of 49 cartons of apples. The mean weight was 45.5 pounds, with a standard deviation of 3. To see if the cartons have a significantly different mean weight from 46 pounds, what would the value of the z-test sta...

utility software  integrated development environment software  productivity software  operating system software RATIONALE A defragmentation tool is a type of common utility software. Utility software enables you to repair, modify, and maintain your computer in some way, such as by improving processing speed. CONCEPT Computer Software 2 Select the file size that is the LARGEST.  10 MB  20,000 KB  1,995 GB

Gail is examining software to determine what happens when an operator makes a mistake while in data entry mode. Gail is addressing the dimension of usability known as __________. satisfaction efficiency visibility error management RATIONALE Gail focuses on software usability evaluation. She deals with error management related to data entry. CONCEPT Usability 2 Reesa works for a large real estate company. She is responsible for installing and supporting the company's internet system...

Zehra works with a software development team. One of his tasks is to define the overall structure of an application and divide it into components to be developed. What is Zehra's role on the software development team?  Programmer  Project Manager  Software Analyst  Software Designer RATIONALE Zehra's role on the software development team is Software Designer. Software Designers use scientific and mathematical principles to develop applications for multiple purposes (e...

Which of the following statements about the relationship between hardware and software is true? Software and hardware can act independently of each other. Software consists of instructions that tell the hardware what to do. A flash drive is an example of software. Hardware can be present in intangible form. RATIONALE It is true that software consists of instructions that tell hardware what to do. Software controls and commands hardware. The other statements are false. Software and hardwa...

Which of the following is a best practice for maintaining a safe and healthy workstation? Adjusting the monitor height so that the bottom of the monitor is in a straight line with the eyes Reaching down to use the keyboard Adjusting the chair height so that a person's calves are perpendicular to the floor Cradling the telephone between the head and neck RATIONALE Adjusting the chair height so that a person's calves are perpendicular to the floor is one of the recommended best practices ...

1 Which of the following is a loss of cognitive abilities (e.g., memory, language) for at least six months? Dementia 2 Although it is inherited, endogenous depression only presents itself as the result of __________. a traumatic life event 3 This Austrian therapist began treating patients for nervous disorders and hysteria in 1886. He developed a new theory of the mind, as well as stages of psychosexual development. Who was this therapist? Sigmund Freud 4 Which of the following is a m...