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Use repeated systematic sampling to estimate the mean or total of a population of your choice. In the process of carrying out the survey and making the estimate, think about or discuss with others the following:
(a) What practical problems arise in establishing a frame, such as a map or list of units, from which to select the sample?
(b) How is the sample selection actually carried out?
(c) What special problems arise in observing the units selected?
(d) Estimate the population mean or total.
(e) Estimate the variance of the estimator above.
(f) Give a 95% confidence interval for the population mean or total.
(g) How would you improve the survey procedure if you were to do it again?
If the opinion poll had announced the margin of error for 80% confidence rather than 95% confidence, this margin of error would be?
Given the following data on hotel check-ins for a 6-month period:
the total claim amount for a health insurance policy follows a distribution with density function fx 11000e-x1000 for
objectives1. demostate the use of appropriate tools for converting data into meaningful information.2. select defend
Assume that, the standard deviation of a monthly rents paid by students in a particular town is $40 A random sample of 100 students was taken to estimate the mean monthly rent paid by the whole student population- solution?
In an ABCNews.com nationwide poll done in 2001, the proportion of respondents who thought that it should be illegal to use a hand held cell phone while driving a car was 69 %. The poll's sample was 1027.
Battery manufacturers compete on the basis of the amount of time their products last in cameras and toys. A manufacturer of alkaline batteries has observed that its batteries last for an average of 26 hours when used in a toy racing car. The amo..
If the interval of time between the eruptions is normally distributed with a standard deviation of 29 minutes, what is the probability that a randomly selected time interval between eruptions is longer than 96 minutes?
Sketch the appropriate distribution, and locate the critical region for a = 0.05.
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
In a study, results were presented for a sample of 63 men who were asked to report their actual weight and their ideal weight. The mean difference between actual and ideal weight was 2.48 pounds
When calculating correlation coefficient, what does a value of -2 indicate? Strong negative correlation, Weak negative correlation.
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