A pet food manufacturer has a facility with two lines that blend, can, and cook cat food. The production manager is curious whether there is a difference in the mean population amount produced by the lines. The manager randomly picks 300 daily production reports, 141 of which were for one production line and 159 of which were for the other. Assuming the population variances are unequal, a hypothesis test for the difference between the two population means would have how many degrees of freedom

4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95