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Question: Every 10 years, the United States takes a census. The census tries to count every resident. There are two forms, known as the "short form," answered by most people, and the "long form," slogged through by about one in six or seven households chosen at random. According to the Census Bureau (www.census.gov),". each estimate based on the long form responses has an associated confidence interval."
Why must the Census Bureau base these confidence intervals on t-models? The Census Bureau goes on to say, "These confidence intervals are wider. for geographic areas with smaller populations and for characteristics that occur less frequently in the area being examined (such as the proportion of people in poverty in a middle-income neighborhood)."
for each of the following statements give the null hypothesis ho and the alternate hypothesis h1.1. the mean average
If you have a choice between two estimates, the sample mean from a sample of size 5 and a sample mean from a sample of size 10, which one would generally give a "better" estimate? Clearly state your definition of "better."
If two gloves are randomly selected from the box without replacement, what is the probability that both gloves selected will be right handed.
How many students must be randomly selected to estimate the mean weekly earnings of students at one college?
which is preferable as a graphical display for a large quantitative data set a histogram or a stem-and-leaf diagram?
The data is given below. At 0.05 significance level, test the research hypothesis that μ, the average ratio, is greater than 675. Test the hypothesis using two approaches: the rejection region approach, and the p-value approach.
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give a 95 confidence interval for the mean blood phosphorus level for 5.4 5.2 2.5 4.9 5.7 and 6.3 mgdl. also what
Use the above results and write the regression equation that can be used to predict sales. Estimate the sales volume for an advertising expenditure of 3.5 million dollars and 45 salespeople. Give your answer in dollars
Identify the experimental unit for the study.- Identify the variable measured for each experimental unit.- Is the data collected quantitative or qualitative?
a grocery store is sponsoring a sales promotion where the cashiers give away one of the letters a e l s u v for each
In radar applications the transmitted waveform is often a segment of a sinusoidal signal of known frequency. The frequency of the return signal from the target.
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