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Mathematics, 01.09.2021 16:40, jeanieb
2) Dans un centre de loisir, on veut répartir la totalité
des 154 garçons et des 182 filles dans des groupes
tous de même composition (c'est-à-dire que tous les
groupes compteront le même nombre de garçons
et le même nombre de filles mais pas forcément autant
de garçons que de filles !).
a. Est-il possible de réaliser 2 groupes ?
b. Est-il possible de réaliser 11 groupes ?
c. Combien de groupes maximum peut-on réaliser ?
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Answers: 2
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Mathematics, 22.06.2019 01:10, Weser17
Jobs and productivity! how do retail stores rate? one way to answer this question is to examine annual profits per employee. the following data give annual profits per employee (in units of 1 thousand dollars per employee) for companies in retail sales. assume σ ≈ 4.0 thousand dollars. 3.7 6.7 3.6 8.5 7.5 5.9 8.7 6.4 2.6 2.9 8.1 −1.9 11.9 8.2 6.4 4.7 5.5 4.8 3.0 4.3 −6.0 1.5 2.9 4.8 −1.7 9.4 5.5 5.8 4.7 6.2 15.0 4.1 3.7 5.1 4.2 (a) use a calculator or appropriate computer software to find x for the preceding data. (round your answer to two decimal places.) thousand dollars per employee (b) let us say that the preceding data are representative of the entire sector of retail sales companies. find an 80% confidence interval for μ, the average annual profit per employee for retail sales. (round your answers to two decimal places.) lower limit -- thousand dollars upper limit -- thousand dollars (c) let us say that you are the manager of a retail store with a large number of employees. suppose the annual profits are less than 3 thousand dollars per employee. do you think this might be low compared with other retail stores? explain by referring to the confidence interval you computed in part (b). yes. this confidence interval suggests that the profits per employee are less than those of other retail stores. no. this confidence interval suggests that the profits per employee do not differ from those of other retail stores. correct: your answer is correct. (d) suppose the annual profits are more than 6.5 thousand dollars per employee. as store manager, would you feel somewhat better? explain by referring to the confidence interval you computed in part (b). yes. this confidence interval suggests that the profits per employee are greater than those of other retail stores. no. this confidence interval suggests that the profits per employee do not differ from those of other retail stores. (e) find an 95% confidence interval for μ, the average annual profit per employee for retail sales. (round your answers to two decimal places.) lower limit 3.75 incorrect: your answer is incorrect. thousand dollars upper limit 6.41 incorrect: your answer is incorrect. thousand dollars
Answers: 3
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Mathematics, 22.06.2019 03:00, haltomnatnathan3548
Which of these phrases uses parallelism to create a sad tone?
Answers: 1
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2) Dans un centre de loisir, on veut répartir la totalité
des 154 garçons et des 182 filles dans d...
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