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In a random sample of 400 residents of Chattanooga, 320 residents indicated that they voted for the Democratic candidate in the last presidential election. Develop a 95% confidence interval estimate for the proportion of all Chattanooga residents who voted for the Democratic candidate.
Suppose that verbal scores on SAT exam have a normal distribution with a population mean 500 points and population standard deviation of 100.
A sample of the math test scores of 35 fourth-graders has a mean of 82 with a standard deviation of 15.
The number of phone calls coming into a switchboard in the next five minutes will either be 0, 1, or 2. The probabilities are the same for each of these (1/3).
The mean age of a sample of 60 students from a class was found out to be 25.3 years. The variance in population age was 16 years.
Should Mark use the study? Why? What is the maximum amount Mark should be willing to pay for this study? What is the maximum amount he should pay for any study?
A population of raw scores is normally distributed with μ =0 60 and = 14. Determine the z scores for the following raw scores taken from that population:
A study was recently done in which 500 people were asked to point out their choices for one of three products. Following table illustrates the breakdown of responses by gender of the respondents.
question 1 explain and describea the difference between population mean and sample mean.b the concept of estimation
c1-tinternetgdpco2cellularfertilityliteracyalgeria0.656.0930.32.858.3argentina10.0811.323.819.32.496.9australia37.1425.3
Comparisons were made for specific causes of death between mortality rates in workers and U.S white male mortality rates from 1950-1978.
define externalities in consumption and production of goods and services. why do they occur? what are examples of
He is twice as likely to visit city X than the other city. Obtain the transition probability matrix. Also determine the proportionate visits by him to each of the cities in the long run.
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