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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.
Calculate mortgage rates, production lot size, forecast the demand for the products, track epidemics and their spread, help solve crimes, even help estimate tax revenues.
Making comparisons From your analysis of the two sets of data, decide which is the longer string. On what basis did you make the decision? Are you sure that your decision is
Construct a histogram of the frequency distribution constructed in part b.- Is the distribution skewed or symmetrical? If it is skewed, is it skewed positively or negatively?
Question 1: ABC Corporation has used regression analysis to perform price elasticity analysis. In doing so management regressed the quantity demanded (y variable) against pric
Consider calculating a student's grade point average using a scale where 4.0 represents an A and 0.0 represents an F. Explain why the grade point average is a weighted mean.
A payoff table is given as State of Nature Decision d1 d2 d3 Low 10 14 7 Medium 8 15 8 High 6 2 9 The probabilities of s1, s2, and s3 are .2, .4, and .4, respectively. what ar
Describe the shape and bias of the bootstrap distribution. Do you think that a simple bootstrap inference (t and percentile confidence intervals) is justified? Explain your
Why does a p-value provide a true measure of statistical significance? Try to relate your answer to previously covered concepts - example continuous probability distributions.
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