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What happens when you try to correlate two variables that are non linear, how does it affect the the size and sign of the coefficient if I correlated these to variables. The ability to pay attention and the level of stimulation in the environment. how would a researcher work around this issue?
Calculate separate confidence intervals for the numbers of days absent for Clinic A and Clinic B, respectively.
A city official has stated that 20% of the items sold by pawn shops within the city have been stolen. Ralph has just purchased 4 items from one of the city's pawn shops.
The lead time is 2 weeks.If you were asked to create an (R,s,S) policy for this, what parameters would you pick? Give your reasons.
Test the hypothesis that the dogs did significantly better than what would be expected with random guessing.
Using the table below, compare and contrast the main differences between two quantitative research designs and two qualitative research designs.
How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test? Why are raw scores transformed to standardized scores, such as z-scores, in order to interpret those raw scores?
A railway company operates a number of different services. One of these connects two cities and the journey time is assumed to be normally distributed with a mean of 125 minutes and a standard deviation of 5 minutes.
A locksmith is preparing an electronic key code of 3 integers selected from the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} without replacement. Calculate the probability that at least one of integer in the code is 5.
Calculate the probability that a randomly selected egg weights between 62.5 g and 68.75 g. Think of cartons of such eggs as SRSs of size 12 from the population of all eggs.
Do these results suggest that the racial makeup of the faculty members is different from that of the students? (Use the .05 significance level.) Use the five steps of hypothesis testing and explain your findings.
How large a sample should you take if you want to be 95% confident of the results and you want the error of the confidence interval to be no more than .05?
This sample is 500 so the distribution of the sample means will be normal, no matter what the shape of the actual distribution of dollar losses.
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