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Sampling Error
In March 2012, President Obama's approval ratings were the highest they had been in almost a year: 46% of those that Gallup sampled approved of the job Obama was doing as president.
Gallup reports a margin of sampling error of "plus or minus 1 percentage point." Explain in everyday terms what this means. Assume a 95% confidence level.
According to Blackenhorn (24-26 February 1995), in 1990 the probability that a randomly selected child was living with his or her mother as the sole parent.
Compare scent and no scent data for occasion 1 using difference scores via the command trimci(scent[,7]-scent[,10],tr=0), so the mean of the difference scores.
What is the probability that four rolls of the dice total exactly 19? What is the probability of totaling exactly 19 if we know that one die came up 1?
Please describe and define what the chi-square analysis is, the conditions under which it is used, and how it compares to the Pearson Correlation.
a discrete random variable can be described as binomial distribution if is satisfies four conditions briefly discuss
number of headlights that need to be focused for the next customer
Using simplex method, define variables, find how many units of each ingredient are required to meet the biologists need at minimum cost? How do I set up the equations for this problem?
Describe and interpret the results (including the coefficients). Include the linear regression equations. How do the R values in linear regression relate to the correlation coefficient in the case of age and height?
Critically evaluate the article by examining the worthiness of the survey. In your discussion, cover the following items: purpose of survey, why was it conducted, for who was it conducted, and was it based on a probability or nonprobability sample..
Use your software to construct A 95% prediction interval based on the model using only opening-weekend revenue and IMDb rating
The fill amount of bottle of soft drink has been found normally distribute with a mean of 2.0 liters and a standard deviation of 0.05 liters. If a random sample of bottles is selected, what is the probability that the sample mean will be between 1..
Bob Nale is the owner of Nale's Quick Fill. Bob would like to estimate the mean number of gallons of gasoline sold to his customers.
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