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 21:30
Yesterday, george drank 1 small bottle and 2 large bottles, for a total of 1,372 grams. the day before , he drank 1 small bottle and 1 large bottle, for the total of 858 grams. how many grams does each bottle hold?
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Mathematics, 22.06.2019 06:00
When you divide a fraction less than 1 by a whole number greater than 1 is the quotient less than,greater than, or equal to the dividend?
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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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