A study was conducted to compare the mean numbers of police emergency calls per 8-hour shift in two districts of Los Angeles. Samples of 100 8-hour shifts were randomly selected from the police records for each of the two districts, and the number of emergency calls was recorded for each shift. The sample statistics are listed below. Find a 90% confidence interval for the difference in the mean numbers of police emergency calls per shift between the two districts of the city. Round your answer to four decimal places and interpret the interval.

Hurry and answer this! circle x with a radius of 6 units and circle y with a radius of 2 units are shown which steps would prove the circles similar? translate the circles so they share a common center point, and dilate circle y by a scale factor of 4. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 4. translate the circles so they share a common center point, and dilate circle y by a scale factor of 3. translate the circles so the center of one circle rests on the edge of the other circle, and dilate circle y by a scale factor of 3

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4