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According to the Census Bureau, 3.04 people reside in the typical American household. A sample of 19 households in Arizona retirement communities showed the mean number of residents per household was 2.97 residents. The standard deviation of this sample was 1.33 residents. At the .05 significance level, is it reasonable to conclude the mean number of residents in the retirement community household is less than 3.04 persons?
State the null hypothesis and the alternate hypothesis.
State the decision rule for .05 significance level.
Compute the value of the test statistic.
q1. a small town has a population of 20000 people. among these 1000 regularly visit a popular local bar. a sample of
Based on this information, what is the upper limit for the 95 percent confidence interval estimate for the proportion of people in Chicago that listen to WJKT-1450?
Illustrate what is the probability all four calls are infact emergencies. Illustrate what is the probability that three or more calls are not emergencies.
In a study comparing individual performance with group performance
question the manufacturer of a steel-belted radial tire claims that the mean mileage the tire can be driven before the
A realtor took a random sample of records of sales of homes from the files maintained by the Albuquerque Board of Realtors.
A study was conducted with alpha = 0.05 to determine if there is a significant linear correlation between the number of credit hours earned at the time of taking statistics 101 and the grade in the course. Eight pairs of data were collected.
An error of .01 in the computation of the short interest rate, approximately what error do you expect to make in the computation of the value of the portfolio?
The manufacturer would like to establish inventory levels such that there is only a five percent chance of running out of stock. Where should the manufacturer set the inventory level?
Use the F test of ANOVA (assume α = 0.05) to decide whether or not there are any differences in true average lumen outputs between the three brands for this type of light bulb.
How would managers find benefit in helping them to obtain valuable information in problem identification research. Discuss whether these data are secondary or primary and justify your answers
suppose that for a set of numeric data we have the following sample statisticsx with bar on top equal 10y with bar on
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