Show your work and explain your results to answer each question.Don’t write just a number.
Data Set 7-2
There were 184 seniors, 179 juniors, 267 sophomores, and 353 freshmen enrolled at a small college.
1.In Data Set 7-2, what is the probability of picking a student at random and getting a freshman?
2.In Data Set 7-2, what is the probability of picking a student at random and getting either a junior or a senior?
3.What is the nature of the Data Set 7-2.(Describe)
Data Set 7-3
A population of scores was normally distributed with a mean of 32 and a standard deviation of 3. 4.Look at Data Set 7-3. What is the proportion that scored between 30 and 27?
5.For Data Set 7-3, what is the range of scores that separate the middle 60 percent from the extremes? (Lower and upper score)
6.Look at Data Set 7-3. What is the proportion of the distribution with scores of 30 or more?