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A survey of 1000 adults in the US conducted in March 2011 asked ''Do you favor or oppose 'sin taxes' on soda and junk food?" The proportion in favor of taxing these foods was 32%
(a) Find a 95% confidence interval for the proportion of US adults favoring taxes on soda and junk food
(b) What is the margin of error?
What is the value of the sample test statistic? (Test the difference µ1 - µ2. Round your answer to two decimal places.)
A teacher gives his class a particular examination on mathematics at the end of each year. The results are normally distributed with a mean test score of 62
Control limits for air conditioner thermostats. A maker of auto air conditioners checks a sample of 5 thermostatic controls from each hour's production.
Examine the two standard deviations. What do these indicate about the range of benefits enjoyed by the two groups?
Consider the following competing hypotheses and accompanying sample data.
Express the confidence interval 0.207±0.051 in open interval form (i.e., (0.155,0.855)).
a 95 confidence interval is generated. which of the following would result in a confidence interval that was less wide
this years dream of a lifetime lottery sold 50000 tickets and gave away 5000 prizes including one grand prize. what is
A number of probabilistic, physical models of the process of fatigue damage have been proposed in the literature. Each leads to a different distribution
in a poll of n 200 randomly selected individuals 60 people said they are opposed to the death penalty for persons
the irs will do a random sampling of tax returns filed in 2010. they are concerned about major fraud and have a new
Ran parts and found 1% defective(1 out of 100). Made a change to the process and want to rerun parts. How many parts do we need to check (and find 0% defective) for a 90% confidence factor
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