Evaluate for true population standard deviation
Random sample of 20 values was selected from the population, and sample deviation was calculated to be 360. Based on the sample result estimate the 98% confidence interval evaluate for true population standard deviation.
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Population standard deviation is 3.1 movies. Based on the .05 level of significance, can you conclude that sample is different from national average?
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Parking at the large university has become a extremely big problem. University administrators are interested in estimating the average parking time (e.g. the time it takes a student to find out a parking spot) of its students. An administrator inc
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