subject
Mathematics, 22.01.2021 20:30 payshencec21

The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1700 hours and a standard deviation of 45 hours. Using the empirical rule,
what percentage of light bulbs last between 1655 hours and 1745 hours?

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 17:00
Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?
Answers: 2
question
Mathematics, 21.06.2019 22:20
Which strategy is used by public health to reduce the incidence of food poisoning?
Answers: 2
question
Mathematics, 21.06.2019 23:20
Which expression is a factor of 12x2 + 29x – 8? x – 8 2x – 1 3x + 8 4x + 1
Answers: 1
question
Mathematics, 22.06.2019 00:30
1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?
Answers: 2
You know the right answer?
The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1700...
Questions
question
Mathematics, 18.09.2019 06:00
question
Mathematics, 18.09.2019 06:00
Questions on the website: 13722360