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A simple random sample of 102 engineering students was taken from a population of 750 engineering majors. It was found that out of these 102 students, 4 were civil engineering majors and 53 were electrical engineering majors. Find 68% confidence intervals for (a) the percentage of civil engineering majors (b) the percentage of electrical engineering majors, or explain brie y why these cannot be determined from our sample.
How to calculate the trimmed mean for each sample by deleting the smallest and largest observation and then corresponding trimming percent ages.
The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status. What is the Population.
The expecyed monetary value with no survey is $62,000. If the expected value of sample information is -$7,000, what is the expected monetary value with the survey?
suppose that 40 percent of the voters in a particular region support a candidate. find the probability that a sample of
suppose that in the setting of the previous exercise you are willing to settle for a margin of error of $1000. will the required sample size be larger or smaller?
you wish to test if there is a difference in the average time male and female students spend studying for a business
suppose we rolled a pair of fair dice and count the number of dots located and the face that lands up. describe this
identify at least one example of probability encountered in everyday life.explain how probability is used in that
What is the probability winning a contract to build either the school or the hospital? The school only? The hospital only?
State the null hypothesis H 0 and the alternative hypothesis H 1 that we would use for this test. Determining null and alternative hypotheses for the height of a plant.
Assume the condition of Normality is met for the problem below. I also want to know the following elements: (Please do not use the Student t test, nor a Chi-square test) Two-tailed test ok?
Public transportation and the automobile are two methods an employee can use to get to work each day. Samples of times recorded for each method are shown. Times are in minutes.
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