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Polychlorinated biphenyl (PCB) is among a group of organic pollutants found in a variety of products, such as coolants, insulating materials, and lubricants in electrical equipment. Disposal of items containing less than 50 parts per million (ppm) PCB is generally not regulated. A certain kind of small capacitor contains PCB with a mean of 47.6 ppm and a standard deviation of 6 ppm. The Environmental Protection Agency takes a random sample of 39 of these small capacitors, planning to regulate the disposal of such capacitors if the sample mean amount of PCB is 48.5 ppm or more. Find the probability that the disposal of such capacitors will be regulated.
Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
An airline is deciding how many reservations to accept for a new flight from Indianapolis to Chicago. The plane has a capacity of 200 seats. Because only 90 percent of passengers typically show up for this flight, they need to determine how many tic..
Using simple linear regression, test whether age when first married (agewed) related to total family income (income91). Report the R-Value. What does the R-Value mean? What is the R-square value, and what does that mean? Finally state the regre..
What is the coefficient of correlation"r"? Do you think this "r" value suggests a strong correlation among the predictors ( the independent variables?
Share one real-worldbinomial distribution situation and one real-world Poisson distribution situation. Be sure to explain why each example is defined as binomial or Poisson. How would you characterize the difference between the two types of distribut..
State and explain the Central Limit Theorem
problem 1a researcher is interested in evaluating whether there is a relationship between number of packs of cigarettes
A study of 37 graduates of four-year colleges revealed the mean amount owed by a student in student loans was $16,381. The standard deviation of the sample was $1,352. Construct and explain a 90% confidence interval estimate of the population mean am..
What is the deference between a complete factorial design and an incomplete factorial design and explain the difference between a two-way AMOVA and a three-way ANOVA.
Find the probability of drawing a diamond card in each of the consecutive draws from a wellshuffled pack of cards, if the card drawn is not replaced after the first draw.
A maker of a certain brand of low fat cereal bars claims that the average saturated fat content is 0.5 grams. To check the claim, a random sample of 9 cereal bars of this brand were drawn, and the sample mean and sample standard deviation was found ..
Obtain an output (as in the tutorials).
What other factors besides price might be included in this equation and do you foresee any difficulty in obtaining these additional data or incorporating them in the regression analysis?
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