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An experiment studied the effects of starch source, starch concentration, and temperature on the strength of gels. This experiment was completely randomized with sixteen units. There are four starch sources (adzuki bean, corn, wheat, and potato), two starch percentages (5% and 7%), and two temperatures (22oC and 4oC). The response is gel strength in grams (data from Tjahjadi 1983).
Analyze these data to determine the effects of the factors on gel strength.
use the following sample data to test whether the GPA are different at the 0.05 level of significance.
Find the correlation between number of contracts sold and average contract price. What does this correlation mean - What happened to the R2 as you added independent variables to the model? Will this always happen? Explain.
the pulse rates for 13 adult women were as follows. construct a 0.95 confidence interval for the mean pulse rate. give
Using the appropriate statistical table, what is the approximate p-value for this test? Construct and interpret the 99% confidence interval for the difference between the population means.
Suppose that an automobile manufacturer designed a radically new lightweight engine and wants to recommend the grade of gasoline to use.
The width of the interval without the finite population correction factor is wider than the confidence interval with the finite population correction factor.
The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision,
A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds. What is the probability that exactly 20 germinate?
specifications for an aircraft bolt require that the ultimate tensile strength be at least 18 kn. it is known that 10
business firm makes and sells a steel product. product costs 5 to produce. product sells for 20. product requires 4
Conduct a hypothesis test to verify if the claim that a bottle contains less than sixteen (16) ounces is supported. Clearly state the logic of your test, the calculations, and the conclusion of your test.
Calculate the test statistic. Determine the p-value of the test-statistic.
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