Mathematics, 07.03.2020 02:01 shyra94
A golfer would like to test the hypothesis that the variance of his golf score equals 10.0. A random sample of 28 rounds of golf had a sample standard deviation of 3.5. Using α = 0.10, the conclusion for this hypothesis test would be that because the test statistic is . between the lower and upper critical values, we reject the null hypothesis and cannot conclude that the variance for this golfer's scores is not equal to 10.0 more than the upper critical value, we can reject the null hypothesis and conclude that the variance for this golfer's scores is not equal to 10.0 less than the lower critical value, we fail to reject the null hypothesis and conclude that the variance for this golfer's scores is not equal to 10.0 between the lower and upper critical values, we fail to reject the null hypothesis and cannot conclude that the variance for this golfer's scores is not equal to 10.0 Using α = 0.10, the lower critical value for this hypothesis test would be . 17.334 16.151 13.848 12.401 The test statistic for this hypothesis test would be . 33.08 40.75 12.57 46.23 The correct hypothesis statement would be . H0: σ2 = 10.0; H1: σ2 ≠ 10.0 H0: μ = 10.0; H1: μ ≠ 10.0 H0: σ = 10.0; H1: σ ≠ 10.0 H0: σ2 ≤ 10.0; H1: σ2 > 10.0
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Mathematics, 22.06.2019 00:30, gthif13211
I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i. e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?
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