Mathematics, 04.04.2021 18:00 nhester2056
1. The department of nature resources reports that a fish is unsafe to eat if the polychlorinated biphenol (PCB) concentration exceeds 4.0 parts billion (ppb). 10 fish were taken randomly from a local lake and the value of the PCB concentration for each fish was measured. The data are listed blow. 2.9 7.6 4.8 5.2 5.1 4.7 6.9 4.9 3.7 3.8 Let µ = the true mean value of the PCB concentration for all the fish in the lake. We want to test to determine whether the fish from this lake should not be eaten. Write down the null and alternative hypotheses
Answers: 3
Mathematics, 21.06.2019 14:10
Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. the mean arrival rate is 10 passengers per minutes. compute the following probabilities. p(x = 4) p(x > 11)
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Mathematics, 21.06.2019 20:00
Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !
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Mathematics, 22.06.2019 00:10
Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?
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Mathematics, 22.06.2019 04:30
For which rational expression is -2 an excluded value of x
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1. The department of nature resources reports that a fish is unsafe to eat if the polychlorinated bi...
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