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An article in Archaeometry involved an analysis of 48 samples of Romano-Britishpottery, found at four different kiln sites in the United Kingdom. The samples were analyzed todetermine their chemical-composition. The percentage of aluminum oxide found in the samplesof two sites is shown below
Island Thorns Ashley Rails18.3 17.715.8 18.318.0 16.718.0 14.820.8 19.1
Do the data provide sufficient information to indicate that there is a difference in the average percentage of aluminum oxide at the two sites? Test at the 5% level ofsignificance.b. Find the approximate p-value for the test.
let x be a continuous distribution with probability density function fx2 x32 if x??2 and fx0 otherwiselet yx2.
a in the psychology department there are 5 golden retrivers 2 german shepaherds and one pug dog. which measure of
What must be true about the data sets to make the confidence intervals you constructed in parts (a) and (b) valid?
auto glass companies now have a machine that can repair broken windshields with a success rate of 85. if a random
A researcher conducts some research in which they identify a significant positive correlation (r =0.42) between the number of children a person has and their life satisfaction. Which of the following is it inappropriate to conclude from this resea..
Where are the main opportunities to improve the cycle time of this process, with respect to both actual time used and the potential best times? What strategy would you use
Quaker Oats is contemplating changing the shape of its box from the quaint cylinder presently in use. Different random samples were selected from five stores of similar size in the same region
regression analysis is used when the independent variable is nominal or ordinal in nature.a. trueb.
determine the point estimate of the population the margin of error for the following confidence interval and the number
The events A and B are mutually exclusive. Suppose P(A) = .30 and P(B) = .20. What is the probability of either A or B occurring? What is the probability that neither A nor B will happen?
Find out a 95% confidence interval for the proportion p of adults who have a great deal of trust and confidence in the executive branch of government.
Neckwarmers. Mountainside Fleece sold 40 Neckwarmers. Solid-color neckwarmers sold for $9.90 each and print ones sold for $12.75 each.
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