subject
Mathematics, 11.12.2019 22:31 thisisalegand

Cadmium, a heavy metal, is toxic to animals. mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. the czech and slovac governments have set a safety limit for cadmium in dry vegetables at 0.5 part per million (ppm). m. melgar et al. measured the cadmium levels in a random sample size 12 of the edible mushroom boletus pinicola and published the results in the paper "influence of some factors in toxicity and accumulation of cd from edible wild macrofungi in nw spain". here are the data: 0.24, 0.59, 0.62, 0.16, 0.77, 1.33, 0.92, 0.19, 0.33, 0.25, 0.59, 0.32 at the 5% significance level, do the data provide sufficient evidence to conclude that the mean cadmium level in boletus pinicola mushrooms differ from the government’s limit of 0.5 ppm? 1) assume that the population standard deviation is known and equal to 0.37 ppm and so apply one mean-z test using r. 2) assume that the population standard deviation is unknown and sample standard deviation must be used as an estimate to population standard deviation and so apply one mean-t test using r.

ansver
Answers: 3

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 16:30, emilyanneK2540
Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian bought 4 bottles of water and 1 cup of coffee for his family for $7.15. how much does each bottle of water cost? how much does each cup of coffee cost? i need this done
Answers: 3
image
Mathematics, 21.06.2019 21:00, itsdeevv
How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?
Answers: 3
image
Mathematics, 22.06.2019 01:30, anaismami1
Travis and paula went to lunch. travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch, they left a 15% tip for the waiter. how many money did they spend altogether?
Answers: 3
image
Mathematics, 22.06.2019 04:00, calebwoodall6477
Which is the standard form for this number? (2 x 10) + (5 x 1) + (8 x 1 10,000 )
Answers: 1
You know the right answer?
Cadmium, a heavy metal, is toxic to animals. mushrooms, however, are able to absorb and accumulate c...

Questions in other subjects:

Konu
Biology, 26.10.2020 01:00