HW5_skeleton

7.1

• 1. probability density function
• 2. model
• 3. True
• 4. .5
• 5. x = μ - σ and x = μ + σ
• 6. The proportion of the population with the characteristics described by the interval of values or the probability that a randomly selected individual.
• 25. mu = 2 sigma = 3
• 26. mu = 5 sigma = 2
• 27. mu = 100 sigma = 15
• 28. mu = 530 sigma = 100
• 33 parts a and b are done for you. But please take a second and look at it!

shadenorm(mu=3400, sig=505, between=c(4410, 6000),col = "blue",dens = 150)

3. 1. There are 2.8% of full-term babies weighing more than 4410 grams.

2. The probability that a randomly selected full-term baby weights at least 4410 grams is 0.028.

1. 1. There are 19.08% human preganancies that last more than 280 days

2. The probability that a randomly selected pregnancy lasts more than 280 days is 0.1908.

2. 1. There are 34.16% human pregnancies that last between 230 and 260 days.

2. The probability that a randomly selected human pregnancy lasts between 230 and 260 days is 0.3416.