Tanisha hit 40 golf shots and measured the distance of each shot. her results are shown below. 16 14 12 10 8 6 4 2 0 170–179 180–189 190–199 200–209 golf-shot distance number of shots distance (yards) what is the experimental probability that tanisha hits a shot that is in the 180–189 yard range? show your math! a. 11/40 b. 2/5 c. 5/8 d. 29/40

Use the graph of the sine function y=2sinθ shown below

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

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.