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A humane society claims that less than 35% of U.S. households own a dog. In a random sample of 407 U.S. households,156 say they own a dog. At alphaequals 0.01,is there enough evidence to support the society's claim?
(a) Write the claim mathematically and identify Upper H 0and Upper H Subscript a.
(b) Find the critical value(s) and identify the rejection region(s).
(c) Find the standardized test statistic.
(d) Decide whether to reject or fail to reject the null hypothesis, and (e) interpret the decision in the context of the original claim.
What are some of the most important characteristics of statistics data?
question as a sample size approaches infinity how does the students t distribution compare to the normal z
Suppose that it is a presidential election year and Ohio is one of the 'swing' states. Your polling company wants to conduct a presidential preference poll of the citizens of Ohio to predict which candidate will win the election.
Find the optimal order quantity.
Dr Zak developed a test to measure depression. He sampled 100 university students to take his five item test. The group of students was comprised of 30 men and 70 women. In this group four persons were African American, six persons were Hispanic and ..
Use the interaction plot to argue that the new design is less sensitive to changes in environmental conditions (temperature and humidity). What limitations apply to this argument?
The marketing communications mix consists of several communication tools. Using a product or service to illustrate your point, list and explain briefly any six communicating tools that you would utilize for this product. Should be written in an es..
a. What is meant by the trend component of a time series? How is a linear trend different from a nonlinear trend? b. Determine the actual percentage growth in the median selling price between the base year and year 10.
Sample with size n = 100 has mean = 30. Assuming the population standard deviation is 8, construct 95% confidence interval for population mean.
A polling company wants to know how many people over the age of 18 in the United States are unemployed. They take a simple random sample of 500 from the United States to find the percentage.
a random variable is normally distributed with a mean of 25 and a standard deviation of 5. if an observation is
Each factor level has been replicated three times. The computer value of the F-statistic is F0=3.26. Find bounds on the P-value.
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