A student overheard the principal saying that there would be a celebrity attending the Senior Prom this year. The following chart shows how quickly the rumor travelled. t t(minutes)

0

1

2

3

4

6

7

8

9

10

s(students who have heard the rumor)

1

8

32

86

156

217

223

224

225

225

1. This data can be modeled with a
regression equation

2. Choose the appropriate regression equation.

3. According to the regression equation about how long did it take for 165 students to hear about the rumor?

A. the probability that a product is defective is 0.1. what is the probability that there will be 1 or less defective products out of the next 8 produced products b. the expected number of imperfections in the coating nylon for parachutes is 6 per 100 yards. what is the probability of finding 12 or fewer imperfections in 260 yards c. in a lot of 54 products there are 9 defective products. calculate the probability that not more than 1 is defective from a random sample of 17 products.