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Question: A manufacturing firm produces a product that has a ceramic coating. The coating is baked on to the product, and the baking process is known to produce 15% defective items (for example, cracked or chipped finishes). Every hour, 20 products from the thousands that are baked hourly are sampled from the ceramiccoating process and inspected.
a. What is the probability that 5 defective items will be found in the next sample of 20?
b. On average, how many defective items would be expected to occur in each sample of 20?
c. How likely is it that 15 or more nondefective (good) items would occur in a sample due to chance alone?
If we wish to be 95% certain of avoiding a Type I error, use these data to examine differences in the average distance traveled to the two clinics.
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Pick a card, any card. You draw a card from a deck. If you get a red card, you win nothing. If you get a spade, you win $5.
In each case, explain whether a control group was used and whether a placebo treatment was used.- Explain whether each of the following experiments was single-blind, double-blind, or neither.
A woman sued a computer keyboard manufacturer, charging that her repetitive stress injuries were caused by the keyboard. The injury awarded about $3.5 million for pain and suffering, but the court then set aside that award as being unreasonabl..
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