Suppose a roll of plastic-coated wire contains an average of…
Suppose a roll of plastic-coated wire contains an average of 0.8 flaws per every 4-meter length of wire. A QA engineer samples an 4-meter length of the wire and will accept the product if it contains zero flaws. What is the probability that the product will be accepted?
Read DetailsThe water company in Enterprise found that 70% of its custom…
The water company in Enterprise found that 70% of its customers pay their monthly bill in full. Assuming customers pay independently, suppose 2 customers are chosen at random from a list of all the customers. What is the probability that both customers will pay their monthly bill in full?
Read DetailsThe heights of women in the USA are normally distributed wit…
The heights of women in the USA are normally distributed with a population mean of 64.5 inches and a population standard of 2.5 inches. What is the probability that a woman randomly selected from the population will be taller than 65 inches?
Read DetailsThe pre-cooked weight of hamburgers at Krusty Burger is norm…
The pre-cooked weight of hamburgers at Krusty Burger is normally distributed with a population mean of 5.5 ounces and standard deviation of 0.15 ounces. If you walk into Krusty Burger and order a burger, what is the probability that the pre-cooked weight of the burger you just ordered is less than 5.3 ounces?
Read DetailsA survey of hotel guests in Alabama found that 20% of all gu…
A survey of hotel guests in Alabama found that 20% of all guests were highly satisfied with their stay. If we take a random sample of 15 guests, what is the probability that at least 10 of the 15 will say they were highly satisfied?
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