A fuel consortium chairman at an airport wants to look at the relationship between cost of crude oil and the cost of jet fuel. The data show a linear pattern with the summary statistics shown below: mean standard deviation 30.8 cost per barrel of crude oil (dollars) = 57.4 y=cost per barrel of jet fuel (dollars) y = 69.9 8y = 35 T=0.99 Find the equation of the least-squares regression line for predicting the cost of jet fuel from the cost of crude oil. Round your entries to the nearest hundredth.

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

Ethan is proving that the slope between any two points on a straight line is the same. he has already proved that triangles 1 and 2 are similar. drag statements and reasons to complete the proof.

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =