Find margin of error for this estimate at confidence level
in a sample of 1000 students from four-year colleges, the mean score on a quantitative literacy test was 310 with a standard deviation of 114. Find the margin of error for this estimate at a confidence level of 95%.
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The fill weight of a certain brand of adult cereal is normally distributed with a mean of 910 grams and a standard deviation of 10 grams. If we select one box of cereal at random from this population, what is the probability that it will weigh les
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The University conducted a survey of 200 students and asked how many hours do they watch television. The surveyors calculate the sample mean to be 3.4 hours and the sample variance 1.8 hours. If μ= 3.0, then calculate the observed value for the
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