Mathematics, 17.12.2019 04:31 henryzx900
Light bulbs used for the exterior walkways of a college campus have an average lifetime of 500 hours. assume that the lifetime of bulbs is normally distributed with standard deviation 50 hours. suppose all of the bulbs were replaced at the same time and they have been turned on for a total of 550 hours. what is the probability that a randomly chosen light bulb lasts less than 550 hours?
Answers: 3
Mathematics, 21.06.2019 14:30
"you know, playing tennis is healthier than watching a tennis match on television," katya remarked to her couch potato brother. in this sentence, healthier is a/an a. superlative. b. comparative. c. positive form. d. adverb.
Answers: 2
Mathematics, 21.06.2019 16:50
What are the steps to solving the inequality 3b + 8 ≥ 14?
Answers: 1
Mathematics, 21.06.2019 17:00
The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?
Answers: 2
Mathematics, 21.06.2019 17:00
You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?
Answers: 1
Light bulbs used for the exterior walkways of a college campus have an average lifetime of 500 hours...
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