You are interested in a career as a database administrator. What skills do you need? Group of answer choices create and maintain a data dictionary; monitor database performance collects and analyzes evidence found on computers, networks, mobile devices, and databases uses data modeling techniques and tools to analyze and specify data usage plans and designs software and apps that consider a user’s reaction to a program and its interface

Mary's manager told her she should insert a graphic into her documentwrite mary a brief note describing how to insert a graphicin a word processing document.

Researchers measured the data speeds for a particular smartphone carrier at 50 airports. the highest speed measured was 78.1 mbps. the complete list of 50 data speeds has a mean of x overbarequals16.11 mbps and a standard deviation of sequals18.65 mbps. a. what is the difference between carrier's highest data speed and the mean of all 50 data speeds? b. how many standard deviations is that [the difference found in part (a)]? c. convert the carrier's highest data speed to a z score. d. if we consider data speeds that convert to z scores between minus2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant? a. the difference is nothing mbps.

When is a chart legend used a. all the time b. whenever you are comparing data that is the same c. whenever you are comparing multiple sets of data d. only for hand-drawn charts