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A box in a certain supply room contains four 40-watt light bulbs, five 60-watt bulbs, and...
A box in a certain supply room contains four 40-W lightbulbs, three 60-W bulbs, and five...
A box in a certain supply room contains four 40-W lightbulbs, three 60-W bulbs, and five 75-W bulbs. Suppose that three bulbs are randomly selected. (Round your answers to four decimal places.) (a) What is the probability that exactly two of the selected bulbs are rated 75-W? (b) What is the probability that all three of the selected bulbs have the same rating? (c) What is the probability that one bulb of each type is selected? (d) Suppose now that...
A box in a certain supply room contains three 40-W lightbulbs, seven 60-W bulbs, and five...
A box in a certain supply room contains three 40-W lightbulbs, seven 60-W bulbs, and five 75-W bulbs. Suppose that three bulbs are randomly selected. (Round your answers to four decimal places.) (a) What is the probability that exactly two of the selected bulbs are rated 75-w2 079 (b) What is the probability that all three of the selected bulbs have the same rating? (c) What is the probability that one blb of each type is selected? d) Suppose now...
a , b two questions please 4. Abox in a certain supply room contains four 40-W...
a , b two questions please
4. Abox in a certain supply room contains four 40-W light bulbs, five 60-W bulbs, and six 75-W bulbs. Suppose that two bulbs are randomly selected without replacement. (a) Given that at least one of them is found to be rated 75-W, what is the probability that both of them are 75-W bulbs? (4 points) (b) Given that at least one of them is not rated 75-W, what is the probability that both selected...
A box in a supply room contains 20 compact fluorescent lightbulbs, of which 6 are rated...
A box in a supply room contains 20 compact fluorescent lightbulbs, of which 6 are rated 13-watt, 9 are rated 18-watt, and 5 are rated 23-watt. Suppose that three of these bulbs are randomly selected. (Round your answers to three decimal places.) (a) What is the probability that exactly two of the selected bulbs are rated 23-watt? (b) What is the probability that all three of the bulbs have the same rating? (c) What is the probability that one bulb...
A box in a supply room contains 23 compact fluorescent lightbulbs, of which 8 are rated...
A box in a supply room contains 23 compact fluorescent lightbulbs, of which 8 are rated 13-watt, 9 are rated 18-watt, and 6 are rated 23-watt. Suppose that three of these bulbs are randomly selected. (Round your answers to three de places.) (a) What is the probability that exactly two of the selected bulbs are rated 23-watt? 0.13 (b) What is the probability that all three of the bulbs have the same rating? 0.0974 (c) What is the probability that...
A box contains six 40-W bulbs, five 60-W bulbs, and nine 75-W bulbs. If bulbs are...
A box contains six 40-W bulbs, five 60-W bulbs, and nine 75-W bulbs. If bulbs are selected one by one in random order, what is the probability that at least two bulbs must be selected to obtain one that is rated 75-W? (Round your answer to three decimal places.)
Q3. A box in a certain supply room contains 15 green balls and 8 red balls....
Q3. A box in a certain supply room contains 15 green balls and 8 red balls. Suppose that four balls are randomly selected without replacement. (a) What is the probability that exactly two of the selected balls are red? (b) What is the probability that at least one of the selected balls are green? (c) Suppose that there are now 15 green balls and 8 red balls and 4 yellow balls. What is the probability that exactly one of the...
A bag of 27 tulip bulbs contains 11 red tulip bulbs, 9 yellow tulip bulbs, and...
A bag of 27 tulip bulbs contains 11 red tulip bulbs, 9 yellow tulip bulbs, and 7 purple tulip bulbs. Suppose two tulip bulbs are randomly selected without replacement from the bag. (a) What is the probability that the two randomly selected tulip bulbs are both red? (b) What is the probability that the first bulb selected is red and the second yellow? (c) What is the probability that the first bulb selected is yellow and the second red? (d)...
A set of five "100-year," sixty (60) watt light bulbs costs $24.52. If H equals the annual number of hours...
A set of five "100-year," sixty (60) watt light bulbs costs $24.52. If H equals the annual number of hours the buib is used, each bulb provides 100H hours of light, and the efficiency of each bulb is 70%. A set of five, sixty (60) watt standard bulbs costs $2.93. Each standard bulb pr ide s H ho sof light and the efic y of each but is 90%. If the cost of elect city is SO 0589/ W n,...
A bag of 100 tulip bulbs purchased from a nursery contains 25 red tulip bulbs, 40...
A bag of 100 tulip bulbs purchased from a nursery contains 25 red tulip bulbs, 40 yellow tulip bulbs, and 35 purple tulip bulbs. (a) What is the probability that a randomly selected tulip bulb is red? (b) What is the probability that a randomly selected tulip bulb is purple? (c) Interpret these two probabilities. (a) The probability that a randomly selected tulip is red is (Type an integer or a decimal. Do not round.) (b) The probability that a...
A box in a certain supply room contains three 40-W lightbulbs, seven 60-W bulbs, and five 75-W bulbs. Suppose that three bulbs are randomly selected. (Round your answers to four decimal places.) (a) What is the probability that exactly two of the selected bulbs are rated 75-w2 079 (b) What is the probability that all three of the selected bulbs have the same rating? (c) What is the probability that one blb of each type is selected? d) Suppose now...
a , b two questions please
4. Abox in a certain supply room contains four 40-W light bulbs, five 60-W bulbs, and six 75-W bulbs. Suppose that two bulbs are randomly selected without replacement. (a) Given that at least one of them is found to be rated 75-W, what is the probability that both of them are 75-W bulbs? (4 points) (b) Given that at least one of them is not rated 75-W, what is the probability that both selected...
A box in a supply room contains 20 compact fluorescent lightbulbs, of which 6 are rated 13-watt, 9 are rated 18-watt, and 5 are rated 23-watt. Suppose that three of these bulbs are randomly selected. (Round your answers to three decimal places.) (a) What is the probability that exactly two of the selected bulbs are rated 23-watt? (b) What is the probability that all three of the bulbs have the same rating? (c) What is the probability that one bulb...
A box in a supply room contains 23 compact fluorescent lightbulbs, of which 8 are rated 13-watt, 9 are rated 18-watt, and 6 are rated 23-watt. Suppose that three of these bulbs are randomly selected. (Round your answers to three de places.) (a) What is the probability that exactly two of the selected bulbs are rated 23-watt? 0.13 (b) What is the probability that all three of the bulbs have the same rating? 0.0974 (c) What is the probability that...
Q3. A box in a certain supply room contains 15 green balls and 8 red balls. Suppose that four balls are randomly selected without replacement. (a) What is the probability that exactly two of the selected balls are red? (b) What is the probability that at least one of the selected balls are green? (c) Suppose that there are now 15 green balls and 8 red balls and 4 yellow balls. What is the probability that exactly one of the...
A set of five "100-year," sixty (60) watt light bulbs costs $24.52. If H equals the annual number of hours the buib is used, each bulb provides 100H hours of light, and the efficiency of each bulb is 70%. A set of five, sixty (60) watt standard bulbs costs $2.93. Each standard bulb pr ide s H ho sof light and the efic y of each but is 90%. If the cost of elect city is SO 0589/ W n,...
A bag of 100 tulip bulbs purchased from a nursery contains 25 red tulip bulbs, 40 yellow tulip bulbs, and 35 purple tulip bulbs. (a) What is the probability that a randomly selected tulip bulb is red? (b) What is the probability that a randomly selected tulip bulb is purple? (c) Interpret these two probabilities. (a) The probability that a randomly selected tulip is red is (Type an integer or a decimal. Do not round.) (b) The probability that a...
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