1. The following is the frequency distribution for the speeds of a sample of automobiles traveling on an interstate highway. 50.000 2. Data collected over several time periods are _____ data. time series 3.The expression used to compute an interval estimate…
a. .60 and .02 b. .60 and .14 c. 320 and .02 d. 192 and 45 2. A finite population correction factor is needed in computing the standard deviation of the sampling distribution of sample means a. whenever the sample…
1.Which of the following is usually bundled as a hidden component of a freeware? Spyware 2.Which of the following are characteristics of spyware? (Choose all that apply.) Secretly collects information about users Negatively affects confidentiality Negatively affects availably Tracking cookies…
1._____ are in charge of presenting data to the end user in a variety of ways.The correct answer is: Data visualization tools 2.______ focuses on filtering data as it enters the system to determine which data to keep and which to…
1._____ is the central activity during the parsing phase in query processing.The correct answer is: Query optimization 2._____ distributed database management systems (DDBMS) integrate multiple instances of the same DBMS over a network.The correct answer is: Homogeneous 3._____ fragmentation allows a user to break…
a. 40 b. 15 c. 1.875 d. 5 2. Random samples of size 17 are taken from a population that has 200 elements, a mean of 36, and a standard deviation of 8. The mean and the standard deviation of…
1.Which of the following aims to support distributed authentication and authorization over the Internet? Federation services 2.In Windows network, transitive trust is used among the different domains inside a forest for implementing: Authentication 3.In which of the following types of…
1._____ can render data useless to unauthorized users who might have violated some of the database security layers.The correct answer is: Data encryption 2._____ are required to prevent another transaction form reading inconsistent data.The correct answer is: Locks 3._____ means that data…
1.What will be the available drive space in a RAID 5 configured system with 3 250GB hard drives? 500 GB 2.Which RAID types would use a minimum of four hard drives? (Choose all that apply). 610 3.What are some common…
1.A(n) _____ join returns not only the rows matching the join condition (that is, rows with matching values in the common columns) but also the rows with unmatched values.The correct answer is: outer 2.A(n) _____ query specifies which data should be…
