Mathematics, 03.02.2020 08:53 koboshy23
Benzene is a toxic chemical used in the manufacturing of medicinal chemicals, dyes, artificial leather, and linoleum. a manufacturer claims that its exit water meets the federal regulation with a mean of less than 7980 ppm of benzene. to assess the benzene content of the exit water, 10 independent water samples were collected and found to have an average of 7900 ppm of benzene. assume a known population standard deviation of 80 ppm and use a significance level of 0.01. test the manufacturer’s claim.(a) state the null and alternative hypothesis. (b) calculate the test statistics. (c) find the p-value and draw your conclusion. round your answer to 5 decimal places. (d) find a 99% two-sided confidence bound on the true mean. round your answer to 2 decimal places.
Answers: 2
Mathematics, 21.06.2019 17:30
Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10
Answers: 2
Mathematics, 21.06.2019 20:00
The table below represents a linear function f(x) and the equation represents a function g(x): x f(x) −1 −5 0 −1 1 3 g(x) g(x) = 2x − 7 part a: write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points) part b: which function has a greater y-intercept? justify your answer. (4 points)
Answers: 2
Mathematics, 21.06.2019 22:30
Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.
Answers: 2
Benzene is a toxic chemical used in the manufacturing of medicinal chemicals, dyes, artificial leath...
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