Listed below are the lead concentrations in mug/g measured in different traditional medicines. use a 0.10 significance level to test the claim that the mean lead concentration for all such medicines is less than 17 mug/g. 10 11 6 4.5 6 20 21 13.5 12 21.5

Acable company claims that the average household pays $78 a month for a basic cable plan, but it could differ by as much as $20. write an absolute value inequality to determine the range of basic cable plan costs with this cable company. a. |x − 78| ≥ 20 b. |x − 20| ≥ 78 c. |x − 20| ≤ 78 d. |x − 78| ≤ 20