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Question: A factory runs three shifts. In a given day, 1% of the items produced by the first shift are defective, 2% of the second shift's items are defective, and 5% of the third shift's items are defective. If the shifts all have the same productivity, what percentage of the items produced in a day are defective? If an item is defective, what is the probability that it was produced by the third shift?
In chi-square goodness-of-fit test when there is close agreement between observed frequency and expected frequency, chi-square test value will be small.
in a study of pregnant women and their ability to correctly predict the sex of their baby 57 of the pregnant women had
Conduct an analysis of variance test to show that there is evidence of an overall difference in population mean stun gun voltage. Use a = 0.05.
Assuming that thedistribution has not changed from what it was in the past year, what is the probability that the mean blackness of the spots is less than 1.0?
100 universities are randomly selected and the average income of those 100 universities was $49,450. Using the 5 step hypothesis testing process can you support the claim that the average income is $50,000? Use a .05 significance level. State the ..
Using the emperical rule solve the following problems for a distribution with a mean of 20 and a stardard diviation of 5. At least what percentage of the values will fall between 15 and 25.
The director of admissions at the University of MD is concerned about the high cost of textbooks for students for each semester. A sample of 25 students enrolled in the University indicates that x(bar) = $315.40 and s = 43.20.
What is the research question of interest for this survey?- What is the population parameter in this study? What is the appropriate statistical notation (symbol) for this parameter?
The following information was obtained from two independent samples selected from two normally distributed populations with unknown but equal variances.
Statistical Issues in Studies Concerning Bioavailability or Bioequivalence.
Describe 2 - 3 combinations of independent and dependent variables that you could test using a regression analysis.
Show how a Monte Carlo simulation could facilitate a sensitivity analysis of the probabilities of the payoffs.
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