All operating systems have types of sub-software

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Reference no: EM132302698

1. All operating systems have types of sub-softwares that handle various components of the computer system. Which of the below is not a sub-software that is necessary for all operating systems to have? (a) Task Management (b) Memory Management (c) File Management (d) Database Management

2. Which system helps to manage tasks that are sent to the CPU from an Application Software? (a) A Information System (b) An Operating System (c) A Database Management System (d) A Network System

3. The internal auditing staff of a local manufacturing company performs a sample audit each quarter to estimate the proportion of accounts that are delinquent (more than 90 days overdue). For this quarter, the auditing staff randomly selected 400 customer accounts and found that 80 of these accounts were delinquent. What is the 95% confidence interval for the proportion of all delinquent customer accounts at this manufacturing company?

a. 0.1671 to 0.2329

b. 0.1992 to 0.2008

c. 0.1608 to 0.2392

d. 0.1485 to 0.2515

e. 0.1714 to 0.2286

4. A quality control manager wishes to estimate the strength of a cable wire. A random sample of 64 wires is tested. The strength of the cable wire is measured in pounds per square inch. Based on the sample results, the sample mean is 238.4 pounds and the sample standard deviation is 40 pounds. What is the 99% confidence interval?

a) 227.96 to 248.84

b) 237.03 to 239.77

c) 236.4 to 240.4

d) 229.21 to 247.59

e) 225.53 to 251.28

5. A perfume bottle is designed to have a capacity of 15 ounces. There is variation in the bottle manufacturing process. Based on historical data, let’s suppose that the bottle capacity can be reasonably modeled by a normal distribution with a mean of 15 ounces and a standard deviation of 0.2 ounces. What proportion of these bottles will have a capacity between 14.8 and 15.1 ounces?

a. 0.4672

b. 0.6247

c. 0.7663

d. 0.5328

Reference no: EM132302698

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