subject
Mathematics, 07.06.2021 01:20 jonathanmalone

Engineers speculate that W, the amount of weight (in units of 1000 pounds) that a certain span of a bridge can withstand without structural damage resulting, is normally distributed with mean 400 and standard deviation 40. Suppose that the weight (again, in units of 1000 pounds) of a car is a random variable with mean 3 and standard deviation.3. Approximately how many cars would have to be on the bridge span for the probability of structural damage to exceed .1? A. 106
B. 123
C. 120
D. 115
E. 117

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 16:20
Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively
Answers: 3
question
Mathematics, 21.06.2019 17:00
Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false
Answers: 2
question
Mathematics, 21.06.2019 18:40
Ten times the square of a non-zero number is eqaul to ninety times the number
Answers: 1
question
Mathematics, 21.06.2019 19:00
Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8
Answers: 1
You know the right answer?
Engineers speculate that W, the amount of weight (in units of 1000 pounds) that a certain span of a...
Questions
question
Mathematics, 29.10.2020 19:00
question
Mathematics, 29.10.2020 19:00
question
Mathematics, 29.10.2020 19:00
question
Mathematics, 29.10.2020 19:00