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Public Health and Nutrition CBC News recently reported that close to 8 million acres of farmland in China is too polluted to use for growing food. There is a high concentration of heavy metals and other chemicals in the soil, and some of these pollutants have already made it into the food chain through rice and other crops. Cadmium is a carcinogenic metal that can cause kidney damage, is absorbed by rice, and is of particular concern.16 A random sample of farmland near Guangzhou was identified, and samples of soil were taken from each. The concentration of cadmium in each sample was measured. Assume that the distribution of the concentration of cadmium is continuous. Use the Wilcoxon signed-rank test to determine whether there is any evidence that the median cadmium concentration is greater than 1 ppm. Use a = 0.05 and find the p value for this test.
Control limits for a meat-packaging process. A meat-packaging company produces 1-pound packages of ground beef by having a machine slice a long circular.
the middle 53 of a normally distributed population lies between what two standard scores? give your answers correct to
A store asked 250 of its customers whether they were satisfied with the service or not. The responses were also classified according to the gender of the customers. We want to study whether there is a relationship between satisfaction and gender.
SIT105 - Critical Thinking and Problem Solving - Demonstrate your understanding of some of the terms used in "Critical Thinking". The second goal is to undertake research with correct referencing.
researchrs found that a person in a particular country spen an average of 5.6 hours a day watch tv in 2010. assume the
A contractor is considering a sale that promises a profit of $3300 with a probability of 0.7 or a loss of $1600 with a probability of 0.3.
using the data provided x the quality of the speed of execution and y overall satisfaction with the electronic trades
The local police academy has 18 new graduates this month that will take the aptitude exam. What is the probability that at most, four candidates will pass the exam?
The impact of a mentoring program for highly aggressive children. Faith, Fiala, Cavell, and Hughes (2011) examined the impact of a mentaring program.
Wild horses. Large herds of wild horses can become a problem on some federal lands in the West. How many herds of wild horses were studied
A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons:
You are to gather a systematic sample from a local phone book with 75,000 names. If every kth name in the phone book is to be selected, what value of k would you choose to gather a sample size of 500?
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