Mathematics, 07.06.2021 06:50 fernandoramirez086
The lifetime of a certain brand of battery is known to have a standard deviation of 19 8 hours. Suppose that a random sample of 90 such batteries has a mean lifetime of 46 2 hours Sased on this sample, find a 90° confidence interval for the true mean lifetime of all batteries of this brand.
Answers: 2
Mathematics, 21.06.2019 15:00
In a school 2/3 of the students study a language of those who study a language 2/5 study french
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Mathematics, 21.06.2019 20:30
Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?
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Mathematics, 21.06.2019 21:00
The paint recipe also calls for 1/4 cup of food coloring. tyler says mrs.mcglashan will also need 6 cups of food coloring. do u agree or disagree? explain.
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The lifetime of a certain brand of battery is known to have a standard deviation of 19 8 hours. Supp...
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