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Given the following information, would your decision be to reject or fail to reject the null hypothesis? (Set the level of significance at .05 for decision making.) Provide an explanation for your conclusion.
a. The null hypothesis that there is no relationship between the type of music a person listens to and his crime rate.P < .05.
b. The null hypothesis that there is no relationship between the amount of coffee a student consumes and GPA. p = .62.
c. The research hypothesis that there is a negative relationship between the number of hours worked and level of job satisfaction. p = .51.
a random sample of 120 financial analyst was polled on the issue of company valuation. ninety-six favored inclusion of
Discuss each of the given "difficulties and disasters" in the context of this research.- Ecological validity.- Extending results inappropriately.
Question is based on statistics binomial and poisson distributions. Where n=8 patients, and p=0.90= probability of a successful surgery, can anyone find the probability of exactly 8 successes in 8 surgeries?
1.For a sample size of 100 determine the crtitical value for a two-tail hypothesis test at a 5% level of significance when the population standard deviation is unknown
it is known that 62 of households in a neighborhood have cable tv. a sample of 8 houses was selected at random.
How many adults must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 8 minute..
Consider a finite size population for N in which you want to study a variable y that takes a very small value for the first element of the sampling frame
Did JAL's forward contracts constitute an economic hedge? That is, is it likely that JAL's losses on its forward contracts were offset by currency gains on its operations?
1. consider the following distribution of grades in a class.nbsp think of this as your population.3540 2 3 4 4 550 0 0
From a statistical point of view, J. Park and Park (2016) reveal a population is all "persons, objects, institutions, or other entities" that can facilitate.
For a large group of overseas passengers, the mean is 78 pounds and the standard deviation is 15 pounds. compute the relative dispersion of each group.
a researcher wants to perform a hypothesis test to determine whether the mean length of marriages in california differs
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