A plumber charges $50 per hour plus $75 service fee. Jackson hired a plumber to fix a leaky sink. What are the total charges of the plumber took 3 1/2 hours to complete the repairs

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At 6 1/2 cents per pound of string beans how much does 7 pounds cost

Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).