Mathematics, 07.08.2019 03:30 starswarsfan
An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed with a standard deviation of 40 hours. if a sample of 30 bulbs has an average life of 780 hours, how large a sample is needed if we wish to be 96% confident that our sample mean will be within 10 hours of the true mean
Answers: 2
Mathematics, 21.06.2019 14:00
Question 3 of 30 paul buys fruit to make smoothies. he buys 3.78 pounds of apples, 2.12 pounds of peaches, and 4.45 pounds of oranges. paul rounds each weight to the nearest tenth of a pound. about how many pounds of fruit did paul buy? (a) 10.5 pounds (b) 10.2 pounds (c) 10.4 pounds (d) 10.0 pounds 30 points
Answers: 2
Mathematics, 21.06.2019 23:00
Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?
Answers: 2
Mathematics, 22.06.2019 00:00
The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?
Answers: 1
Mathematics, 22.06.2019 02:00
Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet
Answers: 2
An electrical firm manufactures light bulbs that have a length of life that is approximately normall...
Social Studies, 20.10.2020 07:01
Biology, 20.10.2020 07:01
Mathematics, 20.10.2020 07:01
Health, 20.10.2020 07:01
Mathematics, 20.10.2020 07:01
Social Studies, 20.10.2020 07:01
English, 20.10.2020 07:01
Mathematics, 20.10.2020 07:01
English, 20.10.2020 07:01
Mathematics, 20.10.2020 07:01