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1. An industrial engineer specializing in ergonomics performs an experiment to see if the position (left, center, or right) within a work station affects the speed achieved by a production line worker who packages a product from a conveyor belt into boxes. Carefully explain what random error (i.e., random variability) signifies in this experiment. What should be randomized in this experiment and why?
2. Suppose you need to measure the size of some candies (Gummi Bears and Peanut M&M's), where size is defined to be the maximum diameter of the candies.
(a) Which kind of candy will probably be subject to more measurement error? Explain.
(b) Suggest how this measurement error could be reduced.
(c) Which kind of candy will probably be subject to more random vari ability? Explain.
Formulate a linear programming model, and then solve it, to determine how many hours process 1 should be operated each week and how many hours process 2 should be operated each week.
if np gt5 and nqgt5 estimate pmore than 9 with n14 and p0.3 by using the normal distribution as an approximation
Assume a normal distribution for pH values. If a random sample of 10 readings in a vat is taken and the mean pH is computed, find each of the following?
you have been recently hired as a marketing analyst in an advertising agency. you are assigned the task of assessing
testing for population mean.the average fee charged by a large accounting firm to prepare an individual income tax
1. compute the percentage of the normal curve located at or above each of the following z values.a. 1.50b. -1.50c.
For the sample of men, performance on the simulator task declined by an average of 2.9 points with s = 4.1. Is this a statistically significant change? Use a two-tailed test with = .05.
Let G be a directed graph where c_e is the cost of arc e. If the nodes of G can be assigned feasible potentials then G has no negative dicycle.
Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."
A standard deviation of mg/dL. What is Mrs. Brown's cholesterol level? Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place.
Unexposed women comprising a contro group. at the 0.01 level of significance, was the incidence of cancer greater in the DES users?
the security council has 11 members with the usa russia china france and the uk as permanent members. if at a meeting
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