7. An unfair coin is weighted so that the expected number of tails before the first heads is 3. What is the standard deviation of the number of tails that come up before the first heads?​

Which counter claim is most effective against this claim? rob's essay includes

Which sentence is punctuated correctly?  a. under a microscope; the organisms look a bit like ruffled tennis balls they have armored plates that fit together to make a round shape. b. when the water is disturbed; the organisms respond by glowing this makes swimmers look like floating beams of blue light. c. there is a bay in puerto rico that seems to light up at night; the light comes from tiny organisms in the water. d. the luminescence attracts visitors from around the world people are curious to see; this beautiful otherworldly sight.

What is the definition of listening style? a. your preferred method of listening b. the one correct method of listening c. the most effective way for you to listen d. none of the abovewhat is the definition of listening style? a. your preferred method of listening b. the one correct method of listening c. the most effective way for you to listen d. none of the above