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A study published in the British Medical Journal described how dogs were used in an attempt to identify patients having bladder cancer. A trial involved six different samples of urine from healthy people plus another sample of urine from a person known to have bladder cancer. The trail was repeated 54 times with 22 correct identifications and 32 wrong identification.
Assuming that the dogs did better than what would be expected with random guessing, did they do well enough to be used for actual medical diagnoses? Why or why not?
What are the expected value and variance of the following probability distribution?
Determine the probability that we would reject null hypothesis given that it is true?
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, & 10.
Test the claim that the Snickers bars have a mean weight that is different than 20.1 grams. Because shutting down the plant is very expensive, test the claim at the .01 level of significance.
What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 5 of µ? Use the value 20 for the population standard deviation of scores on this subsection.
For thefts involving more than $1,000, there is an inverse relationship between the value of the goods stolen and the length of the prison sentence given to the thief.
You will investigate four different scenarios of population growth also decline in this town. Graph the model as well as investigate it by four different growth models.
Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesized value for:
Recognize and explain potential threats (up to 3) to external validity.
Identify Independent and Dependent variable being investigated. Formulate the hypothesis statement regarding your research issue.
To find weighted aggregate price index using Laspeyres and Paasche method.
Does drug have significant effect on aggression? Use an alpha level of .05, two tails.
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