Mathematics, 12.12.2019 23:31, mak92
Aphotoconductor film is manufactured at a nominal thickness of 25 mils. the product engineer wishes to increase the mean speed of the film, and believes that this can be achieved by reducing the thickness of the film to 20 mils. eight samples of each film thickness are manufactured in a pilot production process, and the film speed (in microjoules per square inch) is measured. for the 25-mil film, the sample data result is x1 = 1.15 and s1 = 0.11, while for the 20-mil film, the data yield x2 = 1.06 and s2 = 0.09. note that an increase in film speed would lower the value of the observation in microjoules per square inch.
(a) do the data support the claim that reducing the film thickness increases the mean speed of the film? use Ο = 0.10, and assume that the two population variances are equal and the underlying population of film speed is normally distributed. what is the p-value for this test?
Answers: 2
Mathematics, 21.06.2019 23:30, Omarrdz214
Robin spent 25% more time on his research project than he had planned heβs been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project
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Mathematics, 22.06.2019 01:30, isabelgalvarado2838
At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.
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Mathematics, 22.06.2019 01:30, hallkayleel0lozgxtq
Pls what is the decimal equivalent of 5 over 9? select one: a. 0 point 5 bar over top of 5 b. 0 point 6 bar over top of 6 c. 0 point 8 bar over top of 8 d. 0 point 9 bar over top of 9
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Aphotoconductor film is manufactured at a nominal thickness of 25 mils. the product engineer wishes...
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