What is the purpose of a diode in a cordless drill or power screwdriver?
a. to rectify battery voltage
b. to regulate battery power
c. to prevent reverse charging of the batteries
d. to provide a reverse direction at the switch

in 2007, floridians died in alcohol-related collisions.a.  501b.  1,051c.  5,015d.  10,839

Type the correct answer in the box. spell all words correctly. under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

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.