1 Nitratelevel250.134844645.96.39.9752.1843.445.61047.21148.11243.81349.11444.41551.81641.7 6.A Waikato couple have decided to improve stock management practiceson their dairy farm as they are concerned about the amount of pollution that thefarm has caused in nearby waterways. They are particularly concerned about theamount of nitrate run-off coming from their dairy herd. Until recently, nitrate levelsin their local river were often well above the MAV (maximum acceptable value) fordrinking water of 50mg/litre.Once the final improvements on the farm were made, the farmers took frequentmeasurements of nitrate levels in the river over a period of 6 months. They thentook a random sample of 15 of those measurements. These data are available(a)d.p.) and confidence interval (to 2 d.p.) for thei. 95% confidence intervalii. 99% confidence intervalUsing Excel and the data provided, give the margin of error (to 3of the nitrate levels in the river in mg/litre (to get the required accuracy youwill need to give your value of s to at least 3 dp). Explain briefly what the95% CI tells us.(b)they have made have caused nitrate levels in the river to drop below the MAV.Imagine that they have asked you to make use of your statistical knowledge.Using iNZight and the data provided, conduct a one sample t-test (t-test of amean) using a significance level of a = 0.01. Clearly show all steps in your test,including both hypotheses, the relevant information obtained from iNZight andThe farmers wish to test their hypothesis that the improvementsof course the conclusion.What would have been the changes to your answer to question(c)6b if the farmers had wanted to test whether nitrate levels were significantlydifferent from the MAV?(d)Comment briefly on the suitability of the test carried out in question

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Description: 1 Nitratelevel250.134844645.96.39.9752.1843.445.61047.21148.11243.81349.11444.41551.81641.7 6.A Waikato couple have decided to improve stock management practiceson their dairy farm as they are concerned about the amount of pollution that thefarm has

Answer: (a) (i) 44.52 confidence interval 95.% lower 48.42 confidence interval 95.% upper…

Answered: 1 NitrateLevel 2 50.1 3 48 4 46 5 45.9…

Math

Statistics

1 NitrateLevel 2 50.1 3 48 4 46 5 45.9 6. 39.9 7 52.1

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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