Determining the interval estimate
A 98% confidence interval estimate for a population mean was computed to be (26.4, 47.8). Determine the mean of the sample, which was used to determine the interval estimate
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If ten people are picked at random, what is the prob that six will have no flats three will have one flat and one will have two flat tires in the next year?
Consider a normal population with µ = 25 and ? = 7.0. Calculate the standard score for a value x of 27.
The average AIMS test scores for two different teachers in Cochise County were 473 (8 students) and 459 (18 students.) The respective deviations were 39.7 and 24.5. Can it be concluded that the averages are different at Alpha = 0.10?
Find the probability that the mean SAT score for a randomly selected group of 150 11th graders is between 508 and 492.
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Find the 90% confidence interval for the true difference in proportions for the data in problem above.
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If the mean plasma-aldosterone level in African American children what was them mean=230 pmol/L with standard deviation which is 203 pmol/L.
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