A hypothesis will be used to test that a population mean equals 10 against the alternative that the population mean does not equal 10 with known variance . What are the critical values for the test statistic for the significance level of 0.10

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.