A national standard requires that public bridges over 20 feet in length must be inspected and rated every 2 years. The rating scale ranges from 0 (poorest rating) to 9 (highest rating). A group of engineers used a probabilistic model to forecast the inspection ratings of all major bridges in a city. For the year 2020, the engineers forecast that 9% of all major bridges in that city will have ralings of 4 or below. Complete parts a and b. a. Use the forecast to find the probability that in a random sample of 9 major bridges in the city, at least 3 wil have an inspection rating of 4 or below in 2020. P(x 23) = Round to five decimal places as neaded.)

Q: 2(3y-5)=34

A: We will see the ans in next step

Q: -8+2t 4

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Q: M2 − 9m + 20

A:

Q: -6n-2n=16

A: NOTE: Refresh your page if you can't see any equations. . the given expression is

Q: 9w2=12w+5

A:

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A:

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A:

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