Question 1

Find the median.
-$7,3,25,16,22,43,33,32$

Accepted Answer

A)  22.5 
B)  23.5 
C)  22 
D)  25 
A)  22.5 
B)  23.5 
C)  22 
D)  25

Question 2

Construct the specified histogram.
-In a survey, 26 voters were asked their age. The results are shown below. Construct a histogram to represent the data. Use 5 intervals.
$\begin{array}{llllllllllll}43 & 56 & 28 & 63 & 67 & 66 & 52 & 48 & 37 & 51 & 40 & 60 & 62\end{array}$
$\begin{array}{llllllllllll}66 & 45 & 21 & 35 & 49 & 32 & 53 & 61 & 53 & 69 & 31 & 48 & 59 \end{array}$

Accepted Answer

The answer of Construct the specified histogram.
-In a survey, 26...

Question 3

Find a $z$ score satisfying the given condition.
-$30.2 \%$ of the total area is to the right of $z$.

Accepted Answer

A)  0.53 
B)  0.88 
C)  -0.52 
D)  0.52 
A)  0.53 
B)  0.88 
C)  -0.52 
D)  0.52

Question 4

Prepare a frequency distribution for the given data with columns for intervals and frequencies.
-The following is the number of bonus points that 24 students have gotten for extra work. Use six intervals, starting with 0 - 49. $\begin{array}{llllllllllll}16 & 61 & 116 & 176 & 249 & 236 & 156 & 141 & 55 & 45 & 57 & 262\end{array}$
$\begin{array}{llllllllllll}68 & 146 & 158 & 200 & 192 & 127 & 50 & 99 & 150 & 199 & 156 & 295\end{array}$

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 5

Solve the problem.
-Find the percent of the area under the standard normal curve between $z=-2.36$ and $z=-0.14$.

Accepted Answer

A)  $43.5 \%$ 
B)  $43.4 \%$ 
C)  $43.1 \%$ 
D)  $43.9 \%$ 
A)  $43.5 \%$ 
B)  $43.4 \%$ 
C)  $43.1 \%$ 
D)  $43.9 \%$

Question 6

Find the mean for the list of numbers. Round to the nearest tenth.
-$6,5,10,6,12,10$

Accepted Answer

A)  6.7 
B)  8.7 
C)  8.2 
D)  9.8 
A)  6.7 
B)  8.7 
C)  8.2 
D)  9.8

Question 7

Solve the problem.
-If the life, in years, of a washing machine is normally distributed with a mean of 15 years and a standard deviation of 2.4 years, what should be the guarantee period if the company wants less than $1 \%$ of the machines to fail while under warranty?

Accepted Answer

A) L ess than 20.592 years 
B)  More than 9.408 years 
C) L ess than 9.408 years 
D)  More than 20.592 years 
A) L ess than 20.592 years 
B)  More than 9.408 years 
C) L ess than 9.408 years 
D)  More than 20.592 years

Question 8

Find the median.
-$5,4,28,11,48,41,39$

Accepted Answer

A)  39 
B)  25 
C)  11 
D)  28 
A)  39 
B)  25 
C)  11 
D)  28

Question 9

At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are indicated. Round to the nearest whole percent.
-Greater than 15.2 seconds

Accepted Answer

A)  $34 \%$ 
B)  $50 \%$ 
C)  $48 \%$ 
D)  $68 \%$ 
A)  $34 \%$ 
B)  $50 \%$ 
C)  $48 \%$ 
D)  $68 \%$

Find the median. - $7,3,25,16,22,43,33,32$

Find a $z$ score satisfying the given condition. - $30.2 \%$ of the total area is to the right of $z$ .

Solve the problem. -Find the percent of the area under the standard normal curve between $z=-2.36$ and $z=-0.14$ .

Find the mean for the list of numbers. Round to the nearest tenth. - $6,5,10,6,12,10$

Solve the problem. -If the life, in years, of a washing machine is normally distributed with a mean of 15 years and a standard deviation of 2.4 years, what should be the guarantee period if the company wants less than $1 \%$ of the machines to fail while under warranty?

Find the median. - $5,4,28,11,48,41,39$

At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are indicated. Round to the nearest whole percent. -Greater than 15.2 seconds

Algebra and Equations

Graphs, Lines, and Inequalities

Functions and Graphs

Exponential and Logarithmic Functions

Mathematics of Finance

Systems of Linear Equations and Matrices

Linear Programming

Sets and Probability

Counting, Probability Distributions, and Further Topics in Probability

Differential Calculus

Applications of the Derivative

Integral Calculus

Multivariate Calculus

Filters

Exam 10: Introduction to Statistics

Find the median. - 7,3,25,16,22,43,33,327,3,25,16,22,43,33,327,3,25,16,22,43,33,32

Construct the specified histogram. -In a survey, 26 voters were asked their age. The results are shown below. Construct a histogram to represent the data. Use 5 intervals. 43 56 28 63 67 66 52 48 37 51 40 60 62 66 45 21 35 49 32 53 61 53 69 31 48 59

Find a zzz score satisfying the given condition. - 30.2%30.2 \%30.2% of the total area is to the right of zzz .

Solve the problem. -Find the percent of the area under the standard normal curve between z=−2.36z=-2.36z=−2.36 and z=−0.14z=-0.14z=−0.14 .

Find the mean for the list of numbers. Round to the nearest tenth. - 6,5,10,6,12,106,5,10,6,12,106,5,10,6,12,10

Solve the problem. -If the life, in years, of a washing machine is normally distributed with a mean of 15 years and a standard deviation of 2.4 years, what should be the guarantee period if the company wants less than 1%1 \%1% of the machines to fail while under warranty?

Find the median. - 5,4,28,11,48,41,395,4,28,11,48,41,395,4,28,11,48,41,39