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A random sample of size 25 from a normal population has a mean of 63 and a variance of 36. Basing your decision on the value of the t statistic, is it reasonable to say that this information supports the hypothesis that the mean of the population is 58?
The Republican party is interested in studying the number of Republicans that might vote in a particular Congressional district. Assume that the number of voters is binomially distributed by party affiliation (either Republican or not Republican).
Fix-It Copiers advertises a mean time of 100 minutes for office calls with a standard deviation of 25 minutes. What percentage of calls are completed.
The shirt was a mesh polo shirt. Given this information, what is ths probability that the mesh polo shirt came from box 1?
3% from excise taxes and 5% other. If a revenue source is selected at random, what is the probability that it comes from individual or corporate income taxes?
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
test null hypothesis: Meu=80 against alternative hpothesis=negative = 80 (alpha =.05). What does this tell you about meu?
Describe the "third variable problem" as it relates to correlation and provide an example of how you might see this played out in your own field.
If 25 quarters are randomly selected calculate an interval that will include 95% of all the mean weights of randomly selected samples of quarters of size 25.
According to accountemps inc. 48% of all executives believe that employees are most productive on Tuesdays. a random sample of 200 executives is taken for a study.
Find the probability of getting at least 127 boys among 152 babies. Does the result suggest that the YSORT method is effective? Why or why not?
A discrete probability is the likelihood that certain discrete data will occur. What is discrete data? Consider a scenario where you could use a discrete probability to predict the likelihood of an event.
Suppose a simple random sample of size n = 34 is obtained from a population with μ = 30 and σ = 4. Is the sampling distribution of x approximately normal.
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