Silus wants to monitor the temperature of a reaction every 0.5 seconds for 30 minutes. he plans to generate a graph of the temperature values over time and insert the graph into a text document. which pair of tools would be best for silus to use?

a liquid-based thermometer and a graphing calculator
a liquid-based thermometer and a computer
an electronic temperature probe and a computer
an electronic temperature probe and a graphing calculator

Chose the graph below that represents the following system of inequality’s

Abag contains 4 red, 7 blue and 5 yellow marbles. event a is defined as drawing a yellow marble on the first draw and event b is defined as drawing a blue marble on the second draw. if two marbles are drawn from the bag, one after the other and not replaced, what is p(b|a) expressed in simplest form? a. 7/16 b. 7/15 c. 14/16 d. 14/15

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.