Mathematics, 06.08.2019 17:20, chloe456
Suppose harvey owns a small business that produces electron microscopes. he previously owned one machine, machine a, that produced these microscopes. in an effort to increase production, he recently purchased a new machine, machine b, that also produces microscopes. although both machines produce microscopes at the same rate, harvey suspects that machine a produces more defective microscopes than machine b. in order to test this hypothesis, he randomly selects 300 microscopes produced by machine a and 280 microscopes produced by machine b. he observes that 18 of the sampled items from machine a are defective and 14 sampled items from machine b are defective. harvey plans to use the sample data he collected to test if the frequency of defective items produced by machine a is greater than the frequency of defective items produced by machine b. select the appropriate test that harvey should perform to test his hypothesis. matched-pairs ‑test two-sample ‑test for two proportions one-sample ‑test for a mean two-sample ‑test for two means one-sample ‑test for a proportion
Answers: 3
Mathematics, 20.06.2019 18:04, stheresa777
Plzzz asap what is the inverse of f if f(x)=^3 sqrt x-5
Answers: 1
Mathematics, 21.06.2019 15:30, southerntouch103
Gretchen is setting up for a banquet. she has 300 chairs and needs to distribute them evenly among t tables. how many chairs should she put at each table? write your answer as an expression.
Answers: 2
Mathematics, 21.06.2019 22:50, Yangster9305
Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables
Answers: 3
Suppose harvey owns a small business that produces electron microscopes. he previously owned one mac...
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