On the average, a certain computer part lasts ten years. The length of time the computer part lasts is exponentially distributed. a. What is the probability that a computer part lasts more than 7 years?
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- 76% of all bald eagles survive their first year of life. Give your answers as decimals, not percents. If 30 bald eagles are randomly selected, find the probability that (a) At most 22 of them survive their first year of life. 0.73 (b) At least 23 of them survive their first year of life. (c) Exactly 21 of them survive their first year of life. XThe probability of winning $20 in a particular lottery is 0.04 What is the probability that you will get at least one $20 winner if you buy 90 tickets? Round to three decimal places.A certain insecticide kills 60% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide in a particular experiment. What is the probability that exactly 6 insects will die? Round your answer to four decimal places.
- Suppose the average tread-life of a certain brand of tire is 45,000 miles and that this mileage follows the exponential probability distribution. What is the probability that a randomly selected tire will have a tread-life between 30,000 and 50,000 miles?A four-letter word jumble is being formed from the letters in the word LOGARITHM. What is the probability is spells MATH?A certain insecticide kills 80% of all insects in laboratory experiments. A sample of 12 insects is exposed to the insecticide in a particular experiment. What is the probability that every insect will die? Round your answer to four decimal places.
- In a particular week, the probability that it will rain is 75% each day. What is the probability that it will rain 4 of the 7 days this week? Round to three decimal places. 1A certain insecticide kills 70% of all insects in laboratory experiments. A sample of 14 insects is exposed to the insecticide in a particular experiment. What is the probability that exactly 10 insects will die? Round your answer to four decimal places.20% of the patron's order the chef's special. The probability that 2 out of the next ten customers will order the chef's special is? (round your answer to three decimal places).
- A certain insecticide kills 60%60% of all insects in laboratory experiments. A sample of 99 insects is exposed to the insecticide in a particular experiment. What is the probability that exactly 55 insects will survive? Round your answer to four decimal places.Birds arrive at a feeding table independently, at an average rate of six per hour. Find the probability that two birds will arrive in the next ten minutes.A certain insecticide kills 60% of all insects in laboratory experiments. A sample of 7 insects is exposed to the insecticide in a particular experiment. What is the probability that exactly 3 insects will die? Round your answer to four decimal places.