Mathematics, 08.06.2020 22:57 301235

A municipal bond service has three rating categories (A, B, and C). Suppose that in the past year, of the municipal bonds issued in the United States, 60% were rated A, 25% were rated B, and 15% were rated C. Of the municipal bonds rated A, 50% were issued by cities, 30% by suburbs, and 20% by rural areas. Of the municipal bonds rated B, 40% were issued by cities, 35% by suburbs, and 25% by rural areas. Of the municipal bonds rated C, 80% were issued by cities, 15% by suburbs, and 5% by rural areas. Suppose there are a total of 100,000 bonds.
1. What proportion of municipal bonds are issued by suburbs?
2. What proportion are issued by suburbs and are rated B?
3. What proportion are issued by suburbs or rated B
4. If a municipal bond is to be issued by a suburb, what is the probability that it will receive a B rating?
5. Are “Issued by Suburb” and “B rated independent?

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 21:30, Caixiayang3613

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?

Answers: 1

continue

Mathematics, 22.06.2019 00:10, Anaaguayo7406

Change negative exponents to positive, then solve

Answers: 1

continue

Mathematics, 22.06.2019 00:30, kitttimothy55

On her first stroke, maya hit a golf ball 146 yards, 2 feet, 11 inches. on her second stroke, she hit it 163 yards, 1 foot, 2 inches. how far did the ball go all together? convert the answer to larger units whenever possible.

Answers: 2

continue

Mathematics, 22.06.2019 03:30, Madeline6117

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?

Answers: 3

continue

You know the right answer?

A municipal bond service has three rating categories (A, B, and C). Suppose that in the past year, o...