Mathematics, 09.04.2020 22:57, carlosiscr7
The concentration of active ingredient in a liquid laundry detergent is thought to be affected by the type of catalyst used in the process. The standard deviation of active concentration is known to be 3 grams per liter regardless of the catalyst type. Ten observations on concentration are taken with each catalyst, and the data follow: Catalyst 1: 57.9, 66.2, 65.4, 65.4, 65.2, 62.6, 67.6, 63.7, 67.2, 71.0 Catalyst 2: 66.4, 71.7, 70.3, 69.3, 64.8, 69.6, 68.6, 69.4, 65.3, 68.8. a. Find a 95% confidence interval on the difference in mean active concentrations for the two catalysts. Find the P-value. b. Is there any evidence to indicate that the mean active concentrations depend on the choice of catalyst? Base your answer on the results of part (a). c. Suppose that the true mean difference in active concentration is 5 grams per liter. What is the power of the test to detect this difference if α = 0.05? d. If this difference of 5 grams per liter is really important, do you consider the sample sizes used by the experimenter to be adequate? Does the assumption of normality seem reasonable for both samples?
Answers: 2
Mathematics, 21.06.2019 16:00, brandondees25
Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply
Answers: 2
Mathematics, 21.06.2019 22:30, gilcarrillo146
Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal
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Mathematics, 21.06.2019 23:30, Coolcatfurzy
Fill in the table with whole numbers to make 430 in five different ways
Answers: 1
The concentration of active ingredient in a liquid laundry detergent is thought to be affected by th...
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