in order to determine an interval for the mean of a population with unknown standard deviation a sample of 61 items is selected. the mean of the sample is determined to be 23. the number of degrees of freedom for reading the t value is

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false

Which is the graph of the linear equation x – 2y = 6?

Astudent found the solution below for the given inequality. |x-9|< -4 x-9> 4 and x-9< -4 x> 13 and x< 5 which of the following explains whether the student is correct? -the student is completely correct because the student correctly wrote and solved the compound inequality. -the student is partially correct because only one part of the compound inequality is written correctly. -the student is partially correct because the student should have written the statements using “or” instead of “and.” -the student is completely incorrect because there is no solution to this inequality.