# Chapter 13: Question Preview (ID: 6838)

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**For the set of data 12, 13, 15, 15, 16, 19 determine the mean.**

a) 13

b) 14

c) 15

d) 16

**For the set of data 12, 13, 15, 15, 16, 19 determine the mode.**

a) 13

b) 14

c) 15

d) 16

**For the set of data 12, 13, 15, 15, 16, 19 determine the median.**

a) 13

b) 14

c) 15

d) 16

**For the set of data 12, 13, 15, 15, 16, 19 determine the range.**

a) 31

b) 15.5

c) 10

d) 7

**For the set of data 12, 13, 15, 15, 16, 19 determine the midrange.**

a) 31

b) 15.5

c) 10

d) 7

**For the set of data 12, 13, 15, 15, 16, 19 determine the midrange.**

a) 2.45

b) 2.24

c) 1.414

d) 1.29

**The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are between 20 and**

a) 79.7%

b) 61.6%

c) 29.7%

d) 18.1%

**The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are older than 23?**

a) 34.8%

b) 39.1%

c) 60.9%

d) 65.2%

**The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are older than 20.**

a) 24.2%

b) 69.6%

c) 75.8%

d) 30.4%

**The average age of students at Tri-County Community College is normally distributed with a mean of 22.1 and a standard deviation of 2.3. What percent of students are younger than 25.5?**

a) 6.9%

b) 43.1%

c) 75.8%

d) 93.1%

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