When two lights blink in alternation close together, we perceive one light moving back and forth if the time between blinks is short. we want to know the longest interval of time between blinks that preserves this illusion of motion? we ask subjects to turn a knob that slows the blinking until they "see" two lights rather than one light moving. a report gives the results in the form "mean plus or minus the standard error of the mean." data for 12 subjects are summarized as 257±49 (in milliseconds). what are x⎯⎯⎯ and s for these subjects? (this exercise is also a warning to read carefully: that 257±49 is not a confidence interval, yet summaries in this form are common in scientific reports.)

Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit

Gexpressions: practice question 3 of 5 jackson wants to study the popularity of his music video by tracking the number of views the video gets on his website. the expression below represents the total number of views that jackson's video receives n days after he begins tracking the nu views, where b is the rate at which the number of views changes. alb)" select the statement that would accurately describe the effect of tripling a, the initial number of views before jackson beginst the rate at which the number of views changes, b, will triple. the total number of views the video has after n days, a(b)", will not change. the total number of days since jackson begins tracking views, n, will be reduced by one-third. the total number of views the video has after n days, alb)", will triple. submit

Arestaurant added a new outdoor section that was 8 feet wide and 6 feet long. what is the area of their new outdoor section